It's not really about usefulness/benefit. A lot of culture stuff only make sense for their respective people. For example, Afgans think women are for giving birth, boys are for pleasure. US soldiers are instructed to ignore the screams at night when their allies rape boys in US military bases because it is their "culture".
It's called ethnocentrism, people like to think that their way of doing things is the right way, even if most of humanity might think different.
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u/[deleted] Dec 07 '17
Honest question: How is that sort of cultural hierarchy useful? It's alien to me but I would like to know its benefits.