. And yes, the guys may well be keeping mistresses (or high-class prostitutes), but God forbid their wives & daughters be anything but chaste until marriage and 100% faithful after!

Exactly. The conservative moral value of enforcement of purity is almost always used to oppress women.

I think the case can even be made for "food purity" rules like those of Kosher, as the burden of the extra work (more meticulous food prep, keeping and washing two sets of dishes, etc) falls mainly on women.