One is either backward or selfish if one does not

"The pro-natal bias manifests itself in many ways. For example, there is the assumption that one should (get married or simply cohabit in order to) produce children, and that, infertility aside, one is either backward or selfish if one does not.¹³ The assumption of ‘backwardness’ draws on an ontogenetic or individual developmental paradigm—children do not have children, but adults do. Thus if one has not (yet) started breeding, one is not fully adult. But it is far from clear that this is the appropriate paradigm. First, knowing when not to have a baby and having the self-control to follow through with this is a sign of maturity not immaturity. There are all too many (pubescent) children who are having children without being adequately prepared to rear them. Second, is a related point: from a phylogenetic perspective, the impulse to procreation is extremely primitive. If ‘backward’ is understood as ‘primitive’ it is procreation that is backward, and rationally motivated nonprocreation that is evolutionarily more recent and advanced."