As the Soviets learned, you can’t destroy traditional Christian and moral culture and expect nothing to take its place.
So the Left, in the wake of their absolutely destructive “sexual revolution” have created a frankenstein simulacrum, which still tries to regulate or moralize on sex, especially the premarital kind (and indeed, can be as Puritan in some ways as that which they railed against), but has a duct-tape and chicken-wire construct mad up merely of the latest leftist political themes and slogans.
"The Accident." John Prine