Reason #5: Cheaper-- They show a picture of Diner Dash, Cubis 2, Solitaire, and other crap games. Those don't really count.
Reason #4 Controls-- Oh, I get it, satire!
Reason #3 Old games -- Oh wait, they're serious now?
Reason #2 Online WoW -- meh
Reason #1-- Satire again!
Yeah, I don't see myself embracing PC gaming any time soon.