I do agree that people are self-absorbed. But that's people, thats how people operate. Getting easily frustrated by a natural, instinctual characteristic of the human species will make life forever miserable for you, however, cuz it will never ever change no matter how annoying you find it or voice it to be. Ever.

Just be happy that you are one of the lucky one's who possesses an awareness of what's good behavior and what's counter-productive behavior. Many don't have the maturity or the know-how to be able to know the distinction.