> everybody can guarantee themselves shelter, food, warmth without any other human involved.

I was also going to mention that this is actively prevented by modern society. In practice, you cannot forge these things by yourself, as you will soon be stopped by private landownership.

I'm not sure, the trend is energy become cheaper and cheaper and technology become more advanced every time.

I imagine technology that some day advance enough and autonomous enough and cheap enough that enable me to live off the grid with supply of unlimited solar energy and robot that can make me food.

The only thing that can fix society is to have no society.