Invest in Wooden Caskets, in Guns, in Bodybags

Why is it that whenever I play one of the online games that Microsoft included standard with Windows XP that invariably the person I'm playing against always pulls out of the game -- be it hearts, checkers, backgammon, reversi, or spades -- a hand or move away from me winning the game? I don't do it when I'm about to lose, or if something shitty happens like missing a nil or receive the queen of spades. Is it some kind of fundamental inability to accept a loss among many English-speaking players? By ducking out of the game just before the end, you're intent on "saving face" through some bastardised version of a strategic retreat. Personally, it just makes you look like a shithead.