They just don't carry the social risks that they used to.
I mean, divorcing Baby Daddy and collecting child support and pension whilst seeing some other guy, its not The Scarlet Letter.
These are the same women who won't go outside after dark in one of the safest cities in the world. Whilst young guys (at 20-fold the risk of suffering a violent crime by a stranger) wander around blithely at night like they're in their own homes...