It's the variability of the PC platform that single-handedly wins it for me. The fact that last night I re-downloaded BF4 again with premium access and played around with the graphics to suit my priorities, was great. Of course, a lot of people CBA or don't want to be arsed with such 'trivialities' - but I could have just as easily accepted the defaults and jumped right in.
While that was downloading, I noticed EA/Origin were giving away the original Syndicate from 1993. Having had fun memories of playing through and completing that game over 20 years ago - I could have got it again - this time for free. I didn't, but I could have - that choice is mine. As is playing the carbon-clone of Double Dragon for a couple of quid, or alternatively, buying two mega-powerful cards to run anything I want in 4K.
Again, that choice is mine and mine alone. No other platform gets anywhere near close - and for that, I will always remain loyal to PCs. Until a truly revolutionary interface becomes publicly available, I know where I'll be staying!