I've been tempted to post the same thing lately. I've had two teams miss minimums lately, and it's not because I don't play enough live games. Getting stuck in a division with guys who play 15-30 games then give up on the team is hard to overcome. Refusing to play with a bad team affects others who need the games or who built their teams assuming they could manage them live.
If you are going to refuse to play with a losing team, or a team that you knew when signing up would be at a disadvantage against some teams, don't play live. And if you won't play with a weak team, give it away to someone who will, or at the very least have the courtesy to respond to sitemails and whispers and own up to the fact that you're a sniveling wuss who can't stand to lose a pretend computer game.