My first fond computer memories date back about as much back as I can think back - tetris in ASCII graphics on an old computer with a green monitor. Don't remember the exact model, it belonged to my dad. Among the first "proper" games I played on a 486DX2 were "Stunt Island" (which was far ahead of its time imho) and Commander Keen 4.
In case you missed them, after Doom 3 there were Doom (2016) and Doom Eternal, which both were much better than Doom 3.
"Remember?" I still use MS Paint.
And while I'm not into gaming any more, I would rather play DOOM than most of the games out there today. I hate that they never came out with a legit DOOM 3 (what they called DOOM 3 was a joke, nothing at all like the orig).
In case you missed them, after Doom 3 there were Doom (2016) and Doom Eternal, which both were much better than Doom 3.