That's an easy one to answer. If they divorce, they have to split their possessions. If one of the partner dies, the other gets to inherit all, if no will is made to state otherwise.

He was in debt, cheating on his wife and had six kids. Clearly not making a lot of rational decisions. That being said, divorcing the wife would have cost him a ton of money. Especially if his wife didn’t know about the debt and his affair came out in the divorce proceedings.