TigerHawk expresses, really well, a thought I've had recently:
If your answer to losing is to declare yourself "done with politics," then you don't really have the stamina necessary to be a participating citizen. Which is just as well. Democracy requires the continuing participation of the losers, and if you do not have the stones to play the game again the next time then you are part of the problem, not part of the solution. The sooner the passionate people get disappointed and leave the government up to those of us mature enough to recover from the agony of defeat, the closer we will be to substituting casual, fun-loving partisanship for the bitter, spitting version that has dominated in the last 15 or 20 years.