If you truly believe there's no God and that He's nothing more than an imaginary sky being, then you must believe that the devil and his demons aren't real as well.
Normally that's true, but mine eyes have witnessed the ascendency of Trump, so I've been reevaluating my position of late.
I know the devil's greatest trick is to convince the world he doesn't exist
Based on the overall quality of your arguments and evidence, I'm going to go out on a limb here and guess that you're quoting
The Usual Suspects instead of Baudelaire. Which is appropriate, since Keyser Söze is also a murderous fictional construct created from a hodgepodge of sources intended to frighten people into submission with scary stories of his horrific crimes so the real men behind it can maintain their position of dominance and get away with a lot of evil shit.
Normally, I wouldn't recommend this because it's a very dangerous thing to do; but since atheists will have a meeting with the devil eventually unless they accept the reality
So, God, the supposedly all-knowing, all-seeing, all-powerful being, can't review the circumstances of my life once I die to determine why I made the choice to be an atheist, and that it was because I saw no convincing evidence suggesting that God ever existed? It wasn't out of denial, since I'm perfectly willing to accept new information and evidence when it's available. It's that nothing ever happened to make me believe in God. Isn't that kind of on Him instead of me? There might be a person living in my attic right now, but unless they speak up with something more convincing then the occasional creaking floorboards in the middle of the night, it's pretty unreasonable of them to expect me to acknowledge them when I have no proof that they even exist.
Also, how insecure do you have to be to be omnipotent and omniscient yet still require the acknowledgement of some nobody like me in order to let me into your exclusive after party? Wouldn't a truly benevolent and loving God welcome all good people into His Kingdom regardless of whether they prayed or practiced the right way or believed in Him? Even if I believed God were real, I wouldn't choose to worship a God who condemned good people to eternal torment just because they weren't blindly obedient to Him or practiced a different faith. That's evil and unworthy of respect.
they can try it now if they have enough money because all they have to do is go to any Wal-Mart or Target and get a Ouija board for about $20.
I've always suspected that Wal-Mart made a pact with Satan given some of their business practices, but it's good to have it confirmed by someone on the hotline to Jesus.
Ask it a question you don't know the answer to like where a certain item is that you lost. After you get your response, ask why. If it responds to that ask why again and keep repeating why questions to every response. If nothing much happens the first day, repeat the same thing the next day; and keep doing that stunt everyday. You'll probably eventually get the demon inside it riled enough to start making strange things happen.
You believe demons actually reside inside the cheap .50 cent block of wood like it's a
Ghostbusters trap?

I've never even heard that one from people who believe in that crap before. Usually it's just a method to contact the other side, not some demon squatter's bachelor pad. So, when we had a Ouija Board getting dusty in our storage closet for thirty years because no one ever played it, were we restraining the poor demon who wanted to get out, like some kind of evil
Jumanji? Maybe God should fear me, since apparently I have demon fighting powers and didn't even know it. I'm like Rey in
Star Wars. First day; best Jedi ever.
Also,
read this, and learn all about where the demons in the Ouija Board come from.
As for the proof I witnessed, there was one time at a summer camp when I was in my teens when a girl went to pray at the altar; and when she tried to pray out loud, she found out she couldn't and she had been messing with at least one of those things I had mentioned; and as fellow teens were praying with her, I even heard growls that could not be made by any human; and there were no wild creatures within hearing range. Can any atheists explain that?
So we're using "This one time at band camp..." stories as proof?
Your pastor knew he had an audience of impressionable children so he told the girl to go up front and pretend to be unable to pray while he played a recording of growling sounds, because church authority figures are sometimes tricky like that?
You and the girl heard and felt in your own heads what you had been scared into believing by irresponsible adults, because the mind is tricky like that?
You've heard the story told a thousand times over the years and have actually managed to convince yourself that it's true, because memory is tricky like that?
You're just making this all up, because people are tricky like that?
With all due respect, I find it very irritating when an atheists tells me that God is not real because I heard the solid proof with my own ears; and He is so real.
Well, I'm convinced. I was on the fence before, but once you said "He is so real," I said, "Dammit, this guy makes a solid argument. So long heathen unbelievers. I'm with Team Jesus now."
Why is it so important for you that every atheist believes the same thing you do? Surely an all-powerful being can't get its feewings hurt by little old me, right?
If you don't believe this event ever happened, I can even give you the girl's name and the name of the camp for you to try to google and ask about. It's camp Manville; and the girl's name was redacted or redacted or something like that; and her dad was an evangelist, so you might be able to google him.
So I'm guessing there's no commandment against sharing someone's personal information online without their permission? More like a guideline then.
I do love that it's Camp Manville, though. Apropos.
The reason that stunt with a Ouija board wouldn't be a good idea is because from what I heard, possession is not something that someone would want to experience first hand.
Important safety tip.
If you truly believe there's no Hell or lake of fire, then you should have nothing to lose by breaking the sixth commandment that says not to kill and commit suicide in what you feel is the most comfortable way to go. Then you can find out how real Hell is.
Nothing to lose except hurting your family and friends who love you and ending your life prematurely when you could instead do something productive that benefits the lives of others in whatever way you can.
It's pretty scary that you can't conceive of reasons outside Biblical commandments for why you should or shouldn't do such drastic things as take your own life. I bet you're one of those people who wonders why atheists don't just go around murdering people left and right since they don't believe the Ten Commandments are the literal word of God, aren't you?
And for a bit of morbid meta-synergy with this portion of the discussion, a doubly relevant musical interlude:
God put the forbidden fruit in the garden; but He had given instructions not to eat from it, which is a fairly simple command; and when they couldn't handle that He did what He said He'd do.
My Bible says
Reginald Barclay and a Changeling posing as the Snake erased that timeline from existence and we're now living in JJ Abraham's rebooted nuEden, which is like six times the size of the previous Eden-prize and features (Alice) Eve showing her boobs to Kirk without making him turn around, because there's no longer any shame.
He didn't give them a physical death right away; but He did cast them out of the garden on that day, which is death by separation from Him, which makes it difficult to get answers to questions like we'd like to get when we want them. If He wouldn't have cast them out of the garden, He would've given them the impression that they could do whatever they want with no consequences.
Kind of a dick move, really. It's like putting a cookie in front of a little kid and telling them not to eat it, and then if they do, because they're kids, you give them up for adoption. It's kind of hard to learn from your mistakes when the punishment is so disproportional to the crime and long lasting, and you kinda helped cause the crime in the first place by being the only authority figure with experience in existence and entrapping them with the apple. Oh and you could easily use your superpowers to erase the mistake from their heads and give them a second chance with a better explanation besides "Don't do it because I said so!", but you decided this was their one and only chance.
The thing about doing the suicide thing is that it'll be too late to change your mind, so I wouldn't recommend it.
You're just a good advice giving machine today.