I find those stories hard to believe. No one quits because a game frustrated them one particular evening, especially if they've stuck through it for 70 levels and countless hours of grouping, raiding, and/or PvPing. If you had just gotten the game and had a hard time, I can see a person deciding to quit and not looking back. But quitting the game, or an arena team, because a particular group beat you one night? Doesn't happen.

Well, I guess it could happen, but that is not a person I'd want to play with, that can go completely to pieces over something like that.