I, like others in this thread, much prefer PC gaming as well.
The mouse and keyboard are God for me, they're just part of how I play, I'm not conscious of their existence.
I really enjoy the customization afforded by PC gaming. Honestly, a gaming rig isn't that much money. If you're going to make/get a new computer, just put a good video card in it and you're set for a few years.
Conversely, PC gaming is expensive to remain on the cutting edge, that's for sure.
I think a lot of "PC is superior to console" talk comes from the new generation spouting how Halo has revolutionized the FPS and is the best game ever. All the while PC gamers sit and cry at all the fantastic and great games they missed out on. This could naturally be said about a lot of games.
Additionally, I like my games to be quite complicated with a lot of depth. Many console games simply don't have that, and the ones that do aren't very much fun.
So do I think PC gaming is better than consoles? Absolutely, but I would NEVER spit it someones face for holding a different opinion from me.