Molson Hart

Outside of Africa and maybe the middle east (I'm not sure people should be living in deserts of Saudi for example - it's just not built for that), the world does not have too many people. If anything, it has too few. I respect the adoption thing, but do both.

The world is cruel. But what's crueler than not giving a new life the chance to experience it. Hey, if they don't like it, they can leave at any time. Maybe this "I don't want to have kids thing" is just city dwellers who lack the money to raise kids, signalling virtue

I dont think it has anything to do with climate or morality or virtue signalling. It has been shown in animals that when they experience overcrowding in their environment they stop reproducing. If you take darwinism seriously humans could work the same. 1/2

Humanity have been urbanizing rapidly over the last few decades/centuries. It could be as simple as hormonal response to that which we later rationalize.

Mongolia and Bangladesh both have the same fertility rate though.

There are probably many factors. But i would not use population density on the country level. E.g. Canada is sparse but thats because much of it is ice, toronto is crowded. It would be more like % of ppl living in xyz crowded immediate neighborhoods.

A third of Mongolia lives in Ulanbaatar and it has been urbanizing like crazy recently. https://en.m.wikipedia.org/wiki/List_of_cities_in_Mongolia …

I'm pretty sure that if I looked I could find multiple examples of two cities with identical densities, but wildly different birthrates or vice versa. Ulaanbataar is 272/km squared Dhaka is 8800/km squared What fertility do you need in each city to conform to your theory?