Fun note for PS5 folks that haven't found out already, but there's a limited time option that they just added that lets you tweak the theme abit so you can have a kinda goofy banner, but also audio from all era's of Playstation as your startup and menu. Might just stick with PS1, but PS2 is also a possibility for me. I really hope they change their mind on it being limited, it should be a permanent option.
As for my history, I didn't own a PS1, but I played it at a buddies house, the game I remember most there being Final Fantasy 7 as we played through that together. I mostly played PS1 at a local card shop who had one so I would hang out there and play some of my favorite games on the system like Twisted Metal 2, Tekken 3, Crash Bandicoot, etc...
I went in proper with Sony on PS2, as I did eventually get an Xbox, but that was mostly just for Halo, so I played most games of that era on PS2 and stuck with it with an original that I got for my Birthday and then bought myself a slim later on as I didn't need the HDD option for anything that I remember.
After that, I skipped PS3, went 360 that era, and didn't get a PS3 till sometime before the PS4 came out as family grabbed me a slim on the cheap and while there weren't a lot of games I was interested in, there were a few decent ones.
For PS4 I came back and got back into things for Sony, stuck through that, though I don't remember exactly when I got a PS4, maybe a couple years after it came out I think...It was probably a couple years before the Pro came out as I upgraded to that at the time.
And I'm here for PS5, enjoying certain games for sure, though not as much as in the past, but a lot of that is also because I'm a PC gamer primarily, meaning I mostly just go to console gaming for when very specific exclusives come out or I feel like it's a game that doesn't matter if I get it on PC or not, like most retro collection releases I tend to just buy for Switch or PS5 now.