What you have read about traditional societies seems to be at variance with that which I have read.
Their need to prove their worth is articulated in their initiation rites, for a start.
Those who did not cut the mustard had a short life expectancy probably and a miserable life certainly.

Well, true enough for the children. Once they have been admitted to adult society, I suspect the rules change, except for the leadership.

However-- this discussion is probably not appropriate for the oil drum.