Sadly, either we take care of our population levels by any method or the world will adjust by itself. The world has a population carriage and as any ecosystem, can sustain life up to its limits. So will be either human control or nature control caused by the accelerated degradation of the world ecosystem that will lead to more storms, droughts that will decrease food, etc. etc.
We are part of the nature and the nature will do it’s job as been doing for millions of years. Nature never takes a day off.