On the birthday of my first born, I ran across this article
http://www.foreignpolicy.com/story/cms.php?story_id=3376 The authors claim that declining birth rates mean an inevitable drift toward conservative politics and policies, because most children will be born into families where patriarchy rules.
So instead of voluntary human extinction as my second born wants it we will have a more regressive and conservative society because people of my generation who raised thoughtful ethical kids aren't reproducing and sharing those thoughts and ethics. Hmmmm.. . .