Been PC gaming since the 90s. TIE Fighter, Doom, Doom II, Wolfenstein 3D, Heretic, Descent, WarCraft, Alone In The Dark 3, King's Quest VI, Space Quest V..
Then in high school got into online gaming and me and my friends spent countless hours playing StarCraft: Brood War, Age Of Empires II, Quake 2, Action Quake 2, Quake Team Fortress. Brood War and AOE2 are still my most played games of all time, we'd play them for hours every day after school.
Then there was Steam. I had to wait a while before I was able to afford a computer capable of playing Half-Life 2 (played it on Xbox originally). The 2000s-era Valve games, Team Fortress 2, Portal, Left 4 Dead, Left 4 Dead 2..
The 2010s: Skyrim, Dishonored, Portal 2, Terraria, Mass Effect (didn't play it until after 2 and 3 had come out), Mass Effect 2, Mass Effect 3, Bioshock.. Deus Ex: Human Revolution looked really good so before it came out I went back and gave the original Deus Ex another shot, forcing myself to get through the first couple levels until everything started to click. Then I went back and played some other games I'd missed, Deus Ex: Invisible War (which I ended up really enjoying, despite its shortcomings it actually does a couple things better than the original), Fallout 3, and Fallout: New Vegas.
This in the last few years I finally played Morrowind (with a mod that increases the draw distance so you can see all of Vivec at once and it feels more like an actual city, and can see the Ghost Gate from almost anywhere, I absolutely love it), then went on to play Oblivion. Along with newer games, Dishonored 2, Dishonored: Death Of The Outsider, Fallout 4
In the last year Resident Evil 2 remake, Resident Evil 3 remake, Bloodstained..
And my current PC can run all of those games flawlessly.
Yeah, comprehensive backwards compatibility is one of my favorite things about PC gaming.