I think you've got that backwards. "People are different and think different things" is the constant and the rest of what's you're drilling into is an attempt to discover the pattern in it.
So let's go Socratic: why are you asking this?
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The answer is that people of any demographic are not homogeneous and will have different beliefs and values. Your question is too high level to go any deeper than that. The rest of the nonsense you're couching it behind is useless. People are people. Sonder.