The true nature of a human being is to a very large extent silly. Take a close look at yourself. Listen to your inner voice. Are you impressed with what you hear? Are you impressed with your thoughts? Is it not amazing how much nonsense and stupidities a human brain can come up with, this masterpiece of the evolution? This is your true nature. The clever stuff is of course also in your true nature, but that is just a small portion of the totality.
When this information eventually sinks in you don’t have to be upset anymore when people around you seem silly, stupid, vulgar or blind. Of course they are. We are silly, stupid, vulgar and blind.