There are no shortage of helpful and friendly players in games, but there's also an abundance of arrogant gear worshippers, socially inept trolls, die-hard PvP grognards, ineffectual PvE carebears... you get the idea. Almost everyone agrees the extreme cases are bad, but we all think some are worse than others. So what about you? What sort of outlook makes you just quit a group in frustration no matter how the player performs? Is it something hugely removed from your own playstyle and approach, or something that's close to how you normally run and becomes more obnoxious as a result?