I understand why it's a difficult decision. Whether you have kids or not has a massive impact on your life and parenting has a massive impact on the child's life. And there's a time limit. So there are pressures and people may struggle with that - though hopefully they get beyond the stresses and let the decision form itself freely.

What I don't understand is:
(a) Why anyone thinks it's ok to apply their own conclusions about such a personal decision to others.
(b) Why anyone accepts having others' conclusions applied to them.
(c) Why anyone thinks there's any element of "ought", "must" or "should" to this decision.

These are hopelessly outdated ways of thinking that weren't particularly healthy even when there was some societal justification for them. Now they're just toxic. Why do we cling to them? I blame the parents.