Having a child changes everything. All of a sudden you have so much to lose, so much to live for.
The joy of acting for me is to be able to experience emotions in a safe environment. You can't scream and cry in the street because everybody will look. If you do it on a movie set, you get applauded.
While I do not suggest that humanity will ever be able to dispense with its martyrs, I cannot avoid the suspicion that with a little more thought and a little less belief their number may be substantially reduced.