Earlier quoted context omitted.
> When the proper social constraints aren't in place, money = energy = more babies. Funny, it is actually money = better healthcare = less infant mortality + higher cost of raising child = less fertility rate = less babies. Rich countries don't have more babies than poor ones, its the opposite.
>Rich countries don't have more babies than poor ones, its the opposite. Rich countries are market democracies. They have the proper social constraints. In a market democracy it's more like you described, but not entirely, there are plenty of people who abuse the welfare systems to have as many children as possible for the tax credits and other benefits.
I am from India. And the main sentiments for people having more children were - high infant mortality (not knowing who will live to be old, which is still high for India but falling fast), more hands mean more money in home (less people to hire in the farm).
The "more hands mean more money" is exactly what market economy gets you, not a centrally planned communist economy. But with rising standard of living and cost of raising a child, people are moving away from the old mentality.