I've had my PS1 since I was a kid but it doesn't work that well, the reader's a bit knackered, so I use my PS2 for PS1 games now. It wasn't my first PS1 though, I went through a few different ones as a kid for reasons I forget, IIRC I didn't take proper care of them and they stopped reading discs. It still works but games run pretty poorly on it, lots of crashing.
Longest lasting console that still works properly is my original Xbox, I don't remember when I got it but I'd say I was in my mid-childhood, probably around 2003/2004. It's got some marks from where I used to take my gamer rage out on it as a kid but it still works perfectly. Still got all my oldest saves on it too, thank you lord Microsoft for the invention of the hard drive.