Unsafe at any speed

The way how the main character was being described, I felt that he basically had no life and that he was a person that wanted to live that way. At the end when he does have an affair with someone else I found the whole scene uncomfortable and especially how everything went wrong for him afterwards especially with the rain, gray clouds and dampness. I would like to know why this man doesn't seem to try to make his life more gfnner and happier. He just allows his own wife and daughter to step on him and make him feel more worse and more of a boring person.