Behavior of the inhabitants decides the population that can safely be sustained, nature (this includes the natural reactions of humans, such as starting a war over resources for one example) will always solve the problem. Look at Europe for an example. European population was constantly culled by something natural until Europeans learned how to deal with it, as which point the continent could sustain more people. Whether it be learning the hard way that cutting down all the trees and not planting new ones results in you freezing to death due to lack of wood in the next year, or that unsanitary conditions leads to shit like cholera or the bubonic plague, and so on. Or if you prefer, look at Africa, that population in it's natural state was merely a few million, because blacks didn't learn how to farm, or how to be clean, etc. The reason a place like Africa is booming in population is because of globalist programs, receiving technology far beyond their natural state of development, and tons of free gibs from foreigners. If Africa were in it's natural state, millions would of starved to death due to lack of farming, and the population would of returned to a sustainable level One could make the argument that shortly before the bubonic plague hit, Europe was overpopulated, yet if we look at it retrospectively, the numbers were minuscule compared to now, even if we factor out the non-European hordes. Yet somehow Europe is not up in flames _from overpopulation_ (other stuff sure, but not that). If there was no (((outside interference))), I would place money that the natural result would be cutting back on the welfare state, whether willfully or merely out of necessity of it being unsustainable. So yes, the older folks getting fewer free gibs for a bit would suck, but it wouldn't be the end of Europe. Population control is another case of humans playing God when they really shouldn't be, much like genetic engineering. Every time it's attempted it fucks society up massively, such as the shortage of women in China due to the one child policy. If too many humans exist, nature will handle it accordingly, and people will learn, eventually allowing a larger cap without any serious risk. Exactly as they have all throughout history. I would rather a natural plague wipe out a large portion of humanity than a totalitarian global government culling it through artificial means.