I also think there must be some kind of psychological issue behind my lack of interest in children. For instance I have an infant nephew that I see regularly and people ask me if I want to hold him, play with him etc. The answer is no (although sometimes I do it anyway). The strange thing is if I was around a puppy I would want to hold it and play with it - this doesn't seem right. Shouldn't I be adapted to find the young of my own species more loveable than any other?