we also went thru a long period(actually very short relatively speaking) where people left the land to work for someone else to acquire all the material things the industrial, then technological revolution brought us. We will have to go back to at least smaller family farms, more of them, and more people providing some for themselves, just like humanity has done for about 99.999% of its existance. WE definitely benefited from mass farming as in the ability to produce mass amounts of food for much less labor, and provide time for creative endeavors that brought us the "things" we love, but more labor is going to have to go back into farming again to balance things out. AND we need to go into space. If humans don't have frontiers to conquer, we go more batshit crazy than normal.