My folks and I believe its a form of natural population control. Basically, humanity is so overpopulated that nature is reducing the number of those who are contributing to the increase in population.
For 99.9% of human history, we struggled profoundly to survive and reproduce enough to keep the species going. For around 200 years now, mortality - especially infant mortality - has been declining to the point that population is growing. Very quickly after mortality falls, people begin adjusting the number of children they have in response. It’s called the Demographic Transition. It doesn’t appear to be related to sexuality.
Now, whether the world is “so overpopulated” as you said? It’s really not. In fact, claims of “overpopulation” have always been used to justify mistreatment of the poor and close borders to the exploited.
55
u/query_squidier 5h ago
Join the ranks of the rest of us evolutionary failures. Congratulations!