I'm definitely in the minority, Twelve. But it's not because of system pride, or anything silly like that. I think all the systems have had their great games. Hell, I own and love a Sega Saturn (The Panzer Dragoon Series--and I'm lucky enough to own "saga", Dragon Force, Shining Force 3, Gaurdian Heroes...this system was by no means a waste).
But over the past few years, I've gotten into multiplayer games, both online and off. And if I'm gonna play online, I much, much prefer to use a PC. If I'm not gonna play online, four-player games are a must (the two control ports on ps2 drives me nuts, even though I do own a multi-tap), and IMO, nintendo can do home console multiplayer better than anyone. They make games that veterans and new players can play at the same time, which is no small feat. I like some of ps2's single player games, but not enough of them have kept me content for very long, hence my disappointment.
When it comes to single player games, oddly enough, GBA has been my system of choice. All the Castlevanias, Advanced Wars and FF Tactics have kept me nice and busy.