Neither Anti-Natalists nor Pro-Natalists Should be Breeding, and They Won't

"I won't breed." => Disposing of your private property as you see fit. Responsible, none of my business.

"You won't(will) breed." => Defection. Treachery.  

Both pro and anti suffer from narcissistic universalism. Narcissism leads to lack of surviving grandchildren. In the unlikely event that the narcissist chooses a role that leads to many pregnancies, the children will see their parent's behaviour and quite rationally reject parenthood in reaction. 

As usual it's a grass-monkey thing. Tribal leaders want everyone to have kids so they can have lots of disposable shock-troopers. Women don't want anyone else to have kids, so their own kids receive all the loot by default. Everyone wants to meddle, though it doesn't even work. P.S. Women can't imagine a child earning loot, never mind creating loot; they see everyone as either a baby or a predator trying to eat her babies. You might think her husband wouldn't count but she's not supposed to be able to get away from her husband. (Why would he let her?)