I never said that there are no constraints, only that constraints that argue for arresting population growth have turned out to be unnecessary because of variou

I never said that there are no constraints, only that constraints that argue for arresting population growth have turned out to be unnecessary because of various technological and social improvements over time. The average person can't choose to raise children at an older age: either he procreates at the replacement rate, or near-term, the population will nosedive and will necessitate technology improvements to make up for the shortfall. Most economists agree on the necessity of having a good rate of population growth for a nation to be prosperous. Countries like Russia and Hungary, which are rapidly depopulating because of a lack of childbearing and immigration, are flailing to arrest the demographic decline. Europe experienced technology growth and a mini-boom when the plague wiped out huge portions of its population. But it has never fully recovered, with large areas still depopulating, and has experienced a mostly poor rate of growth because of the plague. Demographic disasters are as challenging as climate disasters, if not more, and have affected humanity in huge ways.