They wake up in the morning and have a fight with their spouse. They get in the car and are angry at the traffic, they honk, honk to get people out of the way. G-d should help the person who caused him to miss a light. At work if the person is in a position of authority he yells at his subordinates all day long. When he gets home after another traffic jam he finishes the fight with his wife which he started after he woke up.
Anger makes many people in the world miserable.
Anger is counter-productive. It damages our lives, the lives of those we love and the lives of those we work with. When a person is angry he will forget everything good and only harp on the negative. Betty Doty a professional family Psychologist, in her book Shake the Anger Habit says that the cause of anger is that people believe that things ought to be a certain way. My spouse ought to be a certain way, the traffic ought be light when I am driving by, subordinates at work ought to know what I want before I ask.