If this structure collapses, not only will there be no human life, but most other life will go as well.
Consider that the global structure maintains nuclear power plants, chemical plants, massive weapons, and other things that if left without maintenance, will poison everything around it.
Then you have all the structures of society collapsing at the same time causing even more habitat disruptions, while the climate continues to change.
Life can adapt, but usually not quickly and not in heavily poisoned and radioactive ecologies. Microbes will adapt, but not much else.
People are waking up to this, but now it’s time to have an adult debate about having more children and consumer habits.