> In countries like Saudi Arabia, there are religious police who patrol public spaces looking for, among other things, married people who interact with members of the opposite sex.

> It’s not some kind of outlandish example, this happens today. A woman hanging out with a male co-worker could get charged with adultery even though her family wasn’t injured in any way. And the publicity of the charge is clearly worse for the family’s children than whatever transpired between the married woman and the other man.

Okay, and what does any of that have to do with adultery not being victimless? It's an irrelevant scenario when arguing that adultery is victimless, which is what you did.

Do repressive laws have a large negative impact on children? Sure, but what does that have to do with your assertion adultery is victimless?

Your scenario shows far-right laws in far-right states[1] being bad for children, but I still don't see where you get that adultery itself is victimless.

[1] I always find it funny that most Muslim-run countries are further to the right than the KKK used to be.