It's true that being an artist can make a person selfish of their time and energies. But great artists are very disciplined people and are capable of balancing the two. To succeed in the arts you need to be very disciplined. It hasn't come up yet. But I don't spend a lot of time thinking about that.
All people can compartmentalize - there are aspects of our being that are separate from our kids.
My wife and I are less tolerant now of gratuitous sex and violence in the media since we've become parents. We've always disdained the gratuitous but now it gets under our skin more. But the things I work on, which tend to be R-rated, I'm still going to work on. In the arts, you need to feel passionate about what I'm doing and you can't be passionate if you're always censoring yourself. And I don't know how people can behave immorally by day, and count themselves as good parents at the end of the day.