A society that flaunts casual sex creates continuous problems:
An epidemic of sexually transmitted diseases.
Increase in health care costs to treat those diseases.
Increase in sexual addiction.
Increase in adultery.
Widespread and popular promiscuity.
Broken homes and broken marriages.
Loss of self-control and self-respect.
The popularization of ending prenatal life as a birth control method.
Increase in single moms.
Increase in human trafficking.
Loss of intimacy and decrease in sexual fulfillment.
Increase in welfare rolls.
Unwanted, rejected, neglected children.
Increase in poverty.
Increase in prostitution.
A pattern of passing many of these problems from generation to generation.
Anger, hurt, guilt, and/or resentment in many people who experience these problems.
You reap what you sow (both as a society and as individuals).