Why do People go into Politics?

Did you ever wonder why anyone would subject himself to such distain and ridicule as a person often gets when he runs for a political office? I suppose one reason is that they may had once held an office while they were in school or possibly been a part of a political campaign that makes them feel they know the ropes.  Possibly they think that they are somehow different and everyone will love them. I think the last reason fits Obama. He didn’t realize that there were a lot of us out there who wouldn’t  believe he was Mr. Wonderful.