There is no conscience or self-control, the characters just pursue the urge and grab what they can find to fulfill their desire. This kind of thinking is making sex into something that it was never meant to be. Sex is supposed to be saved for marriage and remain there between the two individuals who have committed their lives together. It is emotional, passionate, and sacred. There is no worry of a STD or any hiding to be done.
Marriage is where the best sex is.
When sex is treated as something cheap and meaningless that is what it becomes. It turns worthless and dirty. The home is being torn apart by people forsaking their wedding vows. Marriages, families, children are falling apart and left heartbroken because of shattered dreams. Years of heartache are exchanged for a meaningless 30 minutes of pleasure.