It _immediately_ becomes untenable, actually. It'll like telling people to "manufacture it yourself". That might be possible for a perfectly fit person living a

It _immediately_ becomes untenable, actually. It'll like telling people to "manufacture it yourself". That might be possible for a perfectly fit person living a Robinson Crusoe life in some remote region; otherwise it's just divorced from reality. We are a social animal - "zoon politicon" in Plato's original Greek - and our activities are social. For better and for worse, we can't declare that not to be the case or claim that we want to just be "left alone".