The only parenthood worthy of a man is responsible parenthood. No one denies that. Some planning of births is necessary for all couples. But what does planning mean? Is it a matter of totally controlling fertility by any means whatsoever: radical contraception, remedial abortion, sterilization, euthanasia of handicapped infants...?
If fact, if we admit that we can eliminate all the undesired ones, human society will be destroyed. If we do not allow the presence of others with their differences, life in society becomes infernal. It was Sartre who said, "Hell is other people!" (Huis clos)