Exactly this. Bill Clinton's life goal wasn't to use the Presidency as a stepping stone to wealth. He just wanted to be President, and would probably still be r

Exactly this. Bill Clinton's life goal wasn't to use the Presidency as a stepping stone to wealth. He just wanted to be President, and would probably still be running if there weren't term limits. But once you enter the government, you suddenly realize that people are willing to throw large sums of money at you to become "friends". Even if politicians don't start out corrupt, corruption is hard to avoid while in office.