Is Everything About Me Inherent in Human Beings?

Narcissists have a tendency to think everything is about us. We go to the coffee counter and someone's kind of rude, and we go away and go that they were rude to me. That was about me, and now you hate that person. But but what's more likely, that they had some problem with you, or that this person is going through something in their life that's making them this way. So i think there can be a a trait in a true narcissis that everything is about me. This is a kind of narcisism inherent in human beings.