Marco,
I went from 150 hours, the year before my first child was born, to 17
the year after he was born. My second child was born a year and a half
later. My log book shows 16, 5, 3, 25, 13, 18, 40, 39, 93, 81, and 77
so far this year. The years with 13 and 18 were spent outside the
continental USA. As the children got older, the time to go flying
became more available. As you can see from the last three years, the
hours have gone up as family travel increased. The last three years
have been almost exclusively high performance rental ($100+), so as the
aircraft speed went up, the travel time went down.

My situation is different. I have been MR MOM since my second child was
born and I have a spouse that travelled as part of her job, so I was on
call 24/7, so to speak. I wouldn't trade my experience for anything,
though!

When my wife's father died out of state, a friend loaned me his
airplane to get my wife to her mother's side. The kids were 4 and 2, it
was the second child's first flight. For the trip home, I gave each of
the kids a grease pencil and they had fun drawing on the rear windows
for and hour and a half. After that trip, every time we drove past the
airport, the 2 year old would gleefully ask, "Daddy, are we going
flying again?" Music to my ears!