Most people take it for granted that it's morally permissible to have children. They may raise questions about the number of children it's responsible to have or whether it's permissible to reproduce when there's a strong risk of serious disability. But in general, having children is considered a good thing to do, something that's morally permissible in most cases (perhaps even obligatory).
Dr. Gerald Harrison is a lecturer at Massey University, New Zealand. email@example.com
Dr. Julia Tanner recently completed her Ph.D at Durham University, UK. firstname.lastname@example.org