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 So I was thinking about the cultures I have experienced and the differences between them.  I know of some cultures where it is inappropriate to look an adult in the eyes or give something to someone with your left hand.  There are also some cultures that seem to be more affectionate than others. (hugging, kissing, etc.) So why is it this way.  Is there something in their genes that makes them more affectionate.  And, I know for certain that nothing "biologically" could lead someone to believe that you shouldn't look an elder in the eyes.  So why all these vast differences if genes and biology do not play a role?

Clearly, this is all because of a random sequence of events. Cause and effect. Cultural diversity is all built off of the environment and whatever that particular culture has influencing it. Random circumstances and situations occur that influence a culture.  One particular culture will be faced with similar events because the living situations of the individuals are similar.  So, a culture is more affectionate because they learned that it was the best way to survive given the circumstances they were dealt.  All cultures have reasons for doing the things they do and being the way they are.  And all these reasons stem from something that happened that caused them to be this way, something random.

On that note, I appreciate all the differences we do have.  Without them, the world would be pointless and boring.