When you're younger - duh - you don't really have the tools to deal with certain things in your life.
But as population became denser, the natural chemical and biological recycling processes became overloaded, calling for a redefinition of property rights.
I doubt if a single individual could be found from the whole of mankind free from some form of insanity. The only difference is one of degree. A man who sees a gourd and takes it for his wife is called insane because this happens to very few people.

