Heard the same thing from my ex-W and there is some merit to your W's side, however I have 50/50 shared custody and it's worked out great. Don't have time to add more now, but I will later.
Me45 (D11 from 1st marriage) W43 (D20 & D16 from 1st marriage) M4 Bomb 6/16/09 W wants D W moved out 8/29/09 I sent her D paperwork 9/25/09...I'm done