I have no doubt a lot of what CW is, and has done, is because of his family and how he grew up. I believe there are dynamics there that we don't know about. I also have no doubt that meeting and falling in love with Shanann changed him, for a while. He changed again when he became involved with NK. Now he appears to be just a lump. So, who/what is the real CW? I believe he was always a cold, selfish monster playing a role. It took certain circumstances to release the monster with horrible results. He probably could have played various roles a long time, unless and until, the door was opened for the monster and the prize was sufficient to lure the monster out. I said early on that he was more than one thing, a melange of personality types
Now there's no role to play and he's a lump.
Finally, based on his interviews, I now wonder if he enjoyed killing? He looked refreshed, invigorated. If he had been successful, would he have killed again?