The viewer naturally sympathizes with Worf and adopts his view of Klingon culture, but remember that he was raised by humans and most of his knowledge of Klingon culture came from very early childhood and books. Imagine a human child raised by another species whose knowledge of Human culture came from fairy tales and like Arthurian stories. He’d come to earth and be outraged that everyone isn’t following some virtuous code of chivalry. A politician broke his word? DUEL TO THE DEATH!