I think it was his father's fault. He had an affair and divored

put his new wife and new kid's welfare over Rodger.  Rodger was very sensitive but he wasn't able to reach out.  So he had all this anger hidden inside him.  After divorce he stayed in the big house and let his wife go out to rent a small place with the kids.  He even cut down child support so Rodger's mom had to move to a cheapter rental.  He didn't care that his own kids had to live with her too.  What kind of father he is!