My first experience of PC 'gaming' was on an old Windows 3.1 machine (might have been a 286) when I was a kid. It belonged to some relatives of ours in London and although previously my brother had a ZX Spectrum and I had a Commodore 64, I had never used a PC before. My aunty taught me how to play Solitaire and I loved it!
But we couldn't afford a PC so I waved goodbye and went back home to my trusty Megadrive until my brother went to uni and saved up for a 2nd hand 386. It had Doom II on it, but wasn't powerful enough to run it full screen! That didn't stop me though. I played on the smallest screen setting possible and hit F5 for low quality graphics. I completed that game pretty much on sound alone. I loved it
I remember one day my brother took his PC down to the computer shop and when he came back it had been upgraded to the tune of a 486 DX4 100 with 4MB RAM! We booted up Doom II and just stood gawping at how fantastic the graphics looked on high settings and full screen.
But he was away at uni a lot, so I carried on with my console gaming. I got an original Playstation with Tomb Raider one Christmas that I had half helped to pay for with some Christmas work. Then I was hooked on console gaming, and Tomb Raider just blew my mind.

It was a time where consoles had overtaken the 486 PC we had so it was a little redundant. I carried on with console gaming for a year or so but then............
I went round a newly made friends house who's estranged father had bought him one of these new fangled PC's powered by something called an 'MMX 233'. He wanted to show me a game he had been getting into.
That game was Quake.
Even though I didn't discover Quake until a year or so after it was released, it changed my gaming world. I have been an avid FPS PC gamer ever since, and an avid Quake/2/3/4 player too (although quake 4 was well....meh)
I have a 360 for the Lego games mainly, as that is the only thing my better half will play. It also comes in handy for beer sessions with the lads where PC gaming isn't really an option.
I had a PS2 running in parallel with a PC for a time, and used it a bit when I had sore wrists from playing Q3 for 10hrs a day, or for games like Resident Evil. I actually bought a Gamecube just for RE and RE Zero

I really enjoy a bit of Xbox, and can happily sit and play on a console for hours and fully enjoy the gaming experience. But my heart is with PC gaming, and in the main SP FPS + online FPS. Looking back to my early experiences on Doom II, I guess it always has been.
Cheers
Buff