Fashionable promiscuity

the most striking element [in the 1934 movie "It Happened One Night"] is the attitude toward drunkenness. The first time we see [Clark] Gable's character he is roaring drunk, and this is assumed to be hilarious. His drunkenness is encouraged and subsidized by other characters. In the post-Prohibition decades, being drunk (as opposed to merely drinking) was seen as rebellious, cool, and fashionable, and people who objected were depicted as prudes and squares. That fad eventually passed, when the damage done by alcoholism could no longer be romanticized away.

Now, in the post-sexual revolution decades, being promiscuous is seen as rebellious, cool, and fashionable, and people who object are depicted as prudes and squares. That fad too will eventually pass, when the damage done by abortion, divorce, and sexually transmitted diseases can no longer be romanticized away. (Frederica Mathewes-Green)

One can hope.