Everything you say makes perfect sense if you assume that you can only have sex with a person you are married to. I don't mind anyone having that standard for themselves. But for me, if that original marriage "agreement" is not fulfilled, then open marriage, for example, seems no worse than the option of divorce.
I'd have to be convinced why divorce is such a happy option compared to open marriage in my case. I think there's a huge difference in this argument for a newly married couple vs. a marriage with grown kids.
You talk about torture and resentment. That's exactly what we don't have. Seems to be very hard for many people to understand that.
