Poorer countries tend to get richer over time. And their diaspora prefers to settle in richer countries. If all populations don't level off then over-population

Poorer countries tend to get richer over time. And their diaspora prefers to settle in richer countries. If all populations don't level off then over-population becomes an increasing problem. Easily exploitable resources are also finite. We are consuming non-renewables and haven't even built a renewable pipeline for the renewable sources, like solar panel or wind turbine construction.