http://www.fathers.com/research/consequences.html

http://www.fathers.com/help/importance.html

http://www.unicef.org/pon96/inabsent.htm
Check out those stats, somebody mentioned Europe. They are a bit better about being fathers in the home than Americans are.

Shall I go on? How many links do you want? Oh, and also note, it doesn't say it only applies to poor kids or wealthy kids are exempt.