I don't hate children. My wife and I just didn't think we would be good parents, and also by the time we got married in 1968, we were pretty nose-down toward what we wanted to do, and having a child was going to be an excuse to fail.
I'd rather do a part because I want to, not because great things are expected of me.
In 1960 I published a book that attempted to direct attention to the possibility of a thermonuclear war, to ways of reducing the likelihood of such a war, and to methods for coping with the consequences should war occur despite our efforts to avoid it.