I hear ya, but the longer you play, the easier it is to separate the head from the heart. When I am watching the 49ers or Dolphins, I "never" cheer for anything negative to happen to those teams, regardless of the fantasy consequences. I was in one league finals match-up last season where I had the defense facing the 49ers on my fantasy squad, and close to $500 riding on it. The thoughts "man, stop those 49ers from scoring" or "come on, force a 49ers turnover" never once entered my head.
Cheer with the heart, manage with the head...and keep a wall between them at all times.
I just find it more fun, to not be in any money leagues. Or if a money league one where everyone puts in $5 and top prize is still pretty small and more about bragging than money.