humans are only species that is trying to use birth control to midigate the issues. Only wanted children should ever be born. GOP are the blight trying to cause mass growth for no end. Societies shrinking is not a problem as automation will replace the humans doing the menial work like it has for last hundred years. No need to replace manpower that is not needed longterm. We are just getting to our proper steady state to be more balanced. Any pack animal will wage war over resources. Look at ants, those things even farm and enslave.