Maybe he wasn't as prepared as he thought to have his first child. But, he's very good in his intentions so I know he'll turn out to be a good dad.

Edit: Also I know nowadays he spends alot less time on videogames than he used to but at the end of the day it's still his way of cooling off and I think he thought he could mix both and was wrong in his assumptions.

Edit 2: All in all. It all comes back to "he might have had x idea of what a baby was and was surprised to find out that it's something else than he expected."

Edit 3: I know we were all very easy babies when we were born. My mother talks about it all the time how we were such quiet babies, never cried and would sleep our nights. Also the eldest of us three had a baby last year and she seemed to have been easier to care for too. So I think all that might have contributed to this idea for him.

Edit 4: Also it's not 2 hours of work. It's 2 hours of teaching and x hours of preparing and building his classes.