That reminds me of a lot of "She got the gold mine, I got the shaft" jokes.
Have you heard why Divorced Barbie costs 10 times what a regular Barbie Doll costs?
Because she comes with the house, the car, and all the rest of Ken's stuff too? You call it a punchline - for me, it's reality :-)
Incidentally, even if marriage were a contract, the remedy would be contract law, not criminal law. It wouldn't cause adultery to be criminal in any case.