Actually, going off on a slight tangent, I do sometimes wonder whether it is morally acceptable to have children. Life can be great, but there is also a great deal about it which is absolutely horrific and terrifying, including the prospect of disease, and inevitable decay and death. What right have we to introduce beings who are then faced with that horror (which is crippling for many)?
When I was doing the B.Phil, a fellow student - very able - wrote her thesis defending the claim that it is morally wrong to bring children into the world without their permission (which they obviously can't give). I did not get to read her thesis or look at her arguments, but once you start to think about it, certain arguments do suggest themselves.