[drooopy]

You're right that many aspects of life have improved since the 1930s, but that doesn’t mean the current conditions for raising children are good or sustainable. In high-income countries, lower birth rates correlate with rising housing costs, lack of affordable childcare, stagnant wages, and job insecurity.

People in the 1930s did have more kids, quite often out of necessity. Child labour was the norm, birth control access was severely limited cmpared to today, and high infant mortality rates meant larger families were a survival strategy.