Babies and childcare can cost either a huge amount, or not very much at all.
The best nutrition, daycare, early childhood learning, classes, tuition, etc. Extreme expenses.
All throughout history, children have been cheap, and if you look back far enough - disposable. And even parents viewed kids as a free source of labor.
Kids used to be left to roam the woods, streets, and neighborhoods. Now a lone child will get a call from CPS, fines, and jail time.
The parents that favor strong government intervention and high expense parenting basically set the rules for all other parents.
In developing countries, children do not cost this much. Those countries are growing and do not face generational collapse with the younger generations being too small and inadequate to pay for their elders.
We did okay for hundreds of thousands of years. Did Big Advertising get the best of us and make us needlessly devote expenses and energy?