[venzaspa]

Limiting your family size has concrete outcomes, having a big family and hoping you can impart the right values so they go onto have an positive impact is no guaranteed. You can hope your child goes onto develop a fusion reactor that fits in a storage container but the likelyhood is they won't be.

In my opinion it's a way to justify your own (perfectly fine) selfish desire to have a child.

[Gibbon1]

Large family sizes dilute family wealth and leave children at a disadvantage to their better capitalized peers.