Wow. I've seen discrimination for skin color, income, education, religion, gender, and sexual preference. You actually dislike people because they play Tetris on an Xbox instead of a PS3? Wow, dude with the really long name. That's pretty sad.
I can imagine you meeting a girl, someday. The two of you fall in love. You go to meet her parents and notice an Xbox 360 under the TV. Then you kill everyone.
Don't stereotype, dude. You'll end up killing your girlfriend's family.