How can a father just not want to spend time with his children ?

My husband see's the Girls for about 2 hours once a week, during the week, he has not done anything with them on a weekend going on 2 months. He does not call them during the week either to check in, no contact all week except for the 2 hours in the middle of the week.

I just don't understand it.

Me:43
H:43
T:20 YRS
M:15 YRS
Bomb: 6/9/08
Bomb#2 7/6/10
Served with papers at work 7/13/10
DD:14, DD:11