He was disillusioned with society, and wanted something better for himself, and believed he would find that internally, in an isolated spot in the wilderness. But he didn't think it through, he was idealistic, and sadly he got his wordly wisdom (that life is nothing unless shared with others) on his death bed. I don't think he was a dumbass. I think he was just young, and a dreamer.
I also think he had a death wish.
"I think the basic anti-aging diet is also the best diet for prevention and treatment of diabetes, scleroderma, and the various "connective tissue diseases." This would emphasize high protein, low unsaturated fats, low iron, and high antioxidant consumption, with a moderate or low starch consumption.
In practice, this means that a major part of the diet should be milk, cheese, eggs, shellfish, fruits and coconut oil, with vitamin E and salt as the safest supplements."
- Ray Peat