There was that law of life, so cruel and so just, that one must grow old or else pay more for remaining the same. - Norman Mailer

No, but why is Croft that way?
Oh there are The Answers. He is that way because of the-corruption-of-the-society. He is that way because he is having problems of adjustment. It is because he is a Texan. It is because he has renounced God. He is that way because he was born that way, or because the Devil has claimed him for one of his own, or because the only woman he ever loved was untrue to him.

I knew that Jack needed a lot of help, and what he really needed was somebody who could spend a prodigious amount of time with him, every night, see him, live with him, live with him the way someone in A.A. lives with a drunk. … I wasn't doing that. So when the crime occurred — because I'd just been hoping things would work out all right — when the crime occurred, I knew that I had a responsibility on that one.

Don't bug me or I'll gas you said the creep