Left 4 Dead is NOT exclusive to 360, it was also released for PC. And just to name a few of the PS3 exclusives you decided to ignore: God of War, Gran Turismo, Metal Gear Solid, Little Big Planet (if you weren't so insecure and actually tried it, you'd realize it's a great game), Uncharted, Ratchet and Clank, Killzone, etc. And the PSN store has quite a bit of exclusive games and DLC.
So you must fall under that retarded frat boy category then eh?
Why limit yourself to one console? I mean your basically turning a blind eye to 2/3 of the gaming industry. Videogames aren't about whose console is better, it's about having fun and enjoying the game. Yeah I know I favor my PS3 over my xbox, but that doesn't mean I'm going to sell it and deprive myself of all the games that get released to it.