I play because being a GM of a major league team would be my dream job.
Therefore I look for pretty difficult leagues that are as real as possible.
And to crush the weak and destroy the innocent etc.
I think a lot of us "adopt" players from other MLB teams who are on our fantasy teams.
For example my "boys" in 2008 are Joey Votto , Ian Snell and Mike Napoli. If your boys succeed you feel like a proud father.
(A lot of people would have seen me dribbling about Votto in the Offseason Rumours thread. I so wish he would become an A

).