With so many in the world we are living beyond what world resources can go on supporting. It would be best for sustainability in this world if there was a lower human population than there is up to now. There will be collapse not a very long way off. If people were not staying with civilization with all the demands for what is had just with civilization there could be greater independence with sustainable living growing all things that can be for food, medicinal herbs, and materials to use, making their own things. There would not be collapse from this way of living without things from civilization and transportation needing fuel.