Many things have changed. Most children survive childhood, and almost no women die in childbirth. In pre-modern societies most children didn’t make, and death in childbirth was the leading cause of death of women (remember that serious infections treated with antibiotics were often fatal before the mid-20th century, and caesarean were done only to save the baby after the mother died). One has to be a very old person to remember when the leading cause of death of Jews involved goyim killing them, or when most professions were largely closed to Jews (not just frum Jews). These sorts of things affect personal decision on economic and family matters. The world changed, don’t complain, get used to it. The old ways were horrible.
