I don't even remember when I got my MacBook for my birthday all those years ago. It must've been at least 5, though I'm sure that it has been longer.
I probably would've kept using my older Dell if I didn't get my MacBook, which has suffered through viruses and malware, and is now way slower, and not everything works as it should. The fact that I've stopped trying to update or maintain it doesn't help matters. Now I just use it every once in a while to play older games that aren't compatible with my MacBook.
My MacBook isn't as fast as it once was. It has suffered through a hard drive crash, so any information that wasn't saved to the external hard drive was lost that time. And the interface for the external hard drive is buggy, ejecting itself at times, even though it says that I'm the one who did that, not the computer itself, and there are times that I can't save files to the external hard drive, such as now.
Some of the trim has also cracked or shed itself, the plastic cover for the battery case has started to pop out, making it difficult to fit in the battery if I remove that, and the recharge mechanism doesn't always work. Speaking of which, I've also had to replace the charge cord. The battery for my older Dell doesn't even recharge any more.
I guess that these are issues I should look into fixing, before forking over money for a new computer, because even though my MacBook can be quirky, I'm used to using it, and when it isn't a little, frustratingly slow, I actually love it.
There is nothing truer about me hesitating to get a new unit than my Game Boys and Nintendo DSs. I only got a Game Boy Advance when Pokemon Ruby and Sapphire came out. When Pokemon Diamond and Pearl came out, it was time for me to get a Nintendo DS. And I only sadly said adieu to my Nintendo DS when X and Y came out (which maybe I should've kept instead of selling. I don't even remember what that particular model was called. Oh well!

).
And I'm not going to stop using my beautiful metallic aquamarine 3DS until the generation when that inevitably becomes obsolete as well, and is not compatible with the latest Pokemon games, even though it has some dents from when it was sent flying-charging cradle and all, when I accidentally snagged my foot on the docking cradle's wire. Hell, I chose not to get the 3DS XL, and I'm not going to get the latest versions that have come out, because I have a saying: "need not, have not". In other words, I find it to be a waste of money, and a waste of my time.
Buying a new gaming system or computer to me just means having to input new settings, something I enjoy putting off until I have to do so.