I read a very academic article, years ago, theorizing how some killer who killed his parents was motivated by survival of self. His parents forced him to do everything they wanted him to do without taking into consideration who he was, what he liked, or what he wanted to do. As a result he totally lost himself, and the only way he thought he could survive was to kill them. I think that explanation works for what CW did. He came from a home where he did everything his parents wanted him to do, and he moved into a marriage where he did everything his wife wanted him to do. He never learned the life skill of speaking up for himself, and since he spent his entire life doing what others expected of him, he probably had no clue who he was, anyway. I’m thinking of his interest in NASCAR, that was really his Dad’s passion, they went all the time together when he was growing up, but CW left the profession as soon as he got far away from his parents. As for SW, the happy family lifestyle and the roles each partner must play was her dream, not CW’s. He always did what he was told, but none of it was his idea. I think NK represented breaking free from it all for him, and he liked the freedom. I think SW was his first serious relationship, and when he met NK, he realized how much he had missed. I think he thought SW was never going to let him go, or at least not until after a really big ugly fight to keep him, and he felt like the most expedient way to break free was to kill her and his children.