Have you ever refused to play a game just because its on an "enemy" system?

[That Guy]

i think my thread does have some legitimacy to it. Fanboys will downplay other systems exclusives and will say "motorstorm is teh suXorZ" or whatever and will convince themselves so much that they won't want to play it when they have the opportunity to.

 I think Viva Pinata is like 20 bucks now.

I want to get Rock Band (but not for Wii) so I might get another system (360 or PS3).

It might hang on the balance of what game I want more: Viva Pinata or MGS4.