Okay, I'm bored, so I'm gonna bring my opinions to the table by slightly rephrasing things that everyone else has already said. That's how forums work, right?
I'm more of a console guy myself, but both systems have merits. I find fast-paced games much easier on consoles, when everything is controlled by ten or so buttons within easy reach, rather than masses of keys and shortcuts to memorise. On t'other hand, RPGs have more room to expand on a PC, which can lead to better gameplay. As a long-time Final Fantasy fan, I never thought I'd say that, but I've recently started playing Baldur's Gate and, yeah. Awesome.
The main reason I prefer consoles, I suppose, is the convenience. Put the disk in and go, no messing about with installing anything. And, of course, console games are just better. Society is moving into the future; none of the best games want to get left behind on a PC.
Also, I'm not a social guy. Most PC games nowadays are focusing on the whole 'online' element of it, and there's no avoiding that. This is true for consoles as well, but my PS2 remains unconnected to the internet, and that's how it's gonna stay. I can't be the only loner type out there, so most console games concentrate on building up a solid offline experience as well as online. PC games, however, generally assume that if you're already on the computer you might as well play online, so the online multiplayer stuff ends up being most of the game.
As a sidenote, I cannot guarantee the accuracy of this rant. Bear in mind that I have very limited experience with PC games, so a lot of this stuff may be total nonsense. Leave me alone, I'm tired.
Basically, console games > PC games.
