PC: enthusiast, pricey.
Consoles: casual, cheap.
There's also a very important thing in gaming: games.
Let's say I want to play Zelda or Final Fantasy, do I want to get a PC for that? And what good do keyboards and graphics do with such games?
In fact I own a gaming PC, so yeah, great performance, woah, amazing graphics, kabooom, smooth movements, and all that stuff we love so much.
But I also own a PS3 and a PS2, 'cause I'm a huge fan of Final Fantasy, and those are games that don't really need any of the PC characteristics to be enjoyed.
In the end the most important thing is that games must be fun to play. Everything else, though important it may seem, is less relevant.