There are some considerations that make marriage attractive.
A guy in a neighboring county suffered a set back when he and his wife divorced. Because he has not remarried, she remains his wife in the eyes of the law. He can set up his will to leave her out but she can contest it because they owned property together that he got in the divorce.
He owns a bunch of land where he and his buddies hunt. If he marries one of his buddies, it breaks the connection with his ex. It creates an automatic pass-through to the new spouse.
That's ludicrous. What state is that? Most divorce agreements contain an explicit Quitclaim clause applying to real property and/or the estate of each other.