I don't like gaming on PCs because of compatibility issues. Your computer or 3D card may not be powerful enough to run game A, so you upgrade, and now you can't play your older games. It's frustrating.
I know with some time and research I can learn how to tweek settings and ram and such to play any game I want. But it's just so much easier to pop a game in a console, and press power, and you're done.
I have a few PC games, though, and I do have a number of games downloaded for cheap off of GoG.com, I just concentrate on my console stuff a whole lot more.