I know people whom I have never seen angry. This looks quite wonderful to me. Anger is such a powerful emotion, to be able to manage it, a lot of mental strength is required. And if one manages this emotion and is able to control it, it will be for the betterment and evolution of other personality characteristics too. Anger is destructive by nature. It leads to inflated egos, blinded sight, wrong judgment and enmity between people. If managed, same emotion can be constructive and positive, making difficult things possible.