The planet does not benefit from our procreation. Continuing the lineage of this overly evolved species isn't a favour to anyone else. And don't even get me started on attempts at continuation of one's own family name (dynasty?!) or efforts to increase numbers of a particular religion/group. Boy, am I glad that I don't carry the weight of that.
Where's the question of the importance of something so frivolous, when I'm questioning the importance of mankind's existence in the first place? Am I the only one who sees the futility of these efforts? Yes, each activity is an effort-- having to deal with heart break, rejection, sickness, handicap, loss, giving exams, securing a university education, and even banal things like climbing a flight of stairs, sometimes, just getting out of bed; each of these things is painful at the least. Sometimes it feels like the pain might just kill me-- oh, but only if it were so easy.
Why would I want to recreate this for someone I'm supposed to love and nurture?
The best way to nurture that entity is to make sure I never bring it to this endless pain which we call life and constantly assert that it's something for which to be grateful.
Birth is a choice, the choice of the one giving birth. And I reserve the right to choose. I only wish that I could convince others of the same.