I would venture that you are able to live this life because others are not. What if everyone was growing their own food, and fixing plumbing: who would be a doc

I would venture that you are able to live this life because others are not. What if everyone was growing their own food, and fixing plumbing: who would be a doctor, a snowboard maker, making phones/internet that we rely on to plan/communicate/learn. Its almost impossible to do everything by yourself, unless we go back to the life of our hunting ancestors