The PC is best for certain games. RTS, FPS, Simulation, Space/Flight Sims and WRPGs. If you like games in these genres, then you'll love the PC.
Personally, I love games on all mediums. You don't have to ignore consoles just because you have a PC, despite the views of some PC fans. I play Diablo, Age of Empires and Sim City all the time. But I still own a Wii, PS3 and DS. Because other genres are best on those consoles (JRPGs, Action games, Sports titles, etc).