Do they? I'm 61. My adult children do not remember a time when there wasn't abortion on demand and readily available contraception. One night stands and shacking up have always been on TV (they think). Cosmopolitan magazine has always told single women "How to please a man". They know nothing else. Their parents MAY have taught them differently but pop culture told them their parents were antiques and not "progressive". Movies books and music taught them they don't have to respect their parents. Or believe them.
I will concede the point. They don't!