1) Do you lock your door when you are home during the day?
Yes. It's a force of habit that I picked up about 14 years ago, after a guy with a gun walked into my parent's house in the middle of the day and tried to rob my brother and I (we were the only ones home). The guy didn't get anything, I smacked the guy in the head with a metal trash can, and my brother got the gun. Guy ended up getting arrested and thrown in jail. But after that day, it became a habit at home to always keep the door locked. Even though I now live in a MUCH improved neighborhood in the middle of suburban utopia, I still keep the door locked.
2) Do you ever forget to lock your door at night?
Nope. It should be locked anyway, but I double-check before going to bed.
3) Do you keep your windows shut during the day?
Yes, unless it's a nice day outside and I am at home. I live in a ground-floor condo so it'd be easy for someone to cut the screens and come in, so I won't leave the windows open or even unlocked unless I'm home.
4) Do you ever leave windows open at night?
Nope. They're all shut and locked when I go to bed.