Look up total fertility rate and the associated forecasts.Don’t agree that the species is a failure but otherwise this is one of braves occasional good points - why are we doing so much to incentivise people to breed? It’s unsustainable. Over the last 100 years the worlds population has quadrupled. We should be taking the welfare we hand out to families and redirecting it to singles given they are making a sacrifice for the greater good
Most models have us peaking at around 10 million then reducing/stabilising. Very few countries are currently out of control in terms of population growth.
We also have enough resources easily on the planet to sustainably keep 10 million going, if we were to reduce wastage, overconsumption, and incrementally increase things like production efficiency and renewable energy.







