God says sex is good. Many people say it is a problem in their marriage. One pitfall is the practice of sex before or outside marriage. Almost all good things can be misused. Food is good, but too much of it or the wrong kind can bring discomfort or disease.
Fire is useful, but when it is misused it brings destruction and death.
God says that sex within the bonds of marriage is beautiful and blessed, but outside these limits it is dirty, ugly, and sinful. Premarital or extramarital sexual experiences can be a mammoth hindrance to a satisfactory sex life in marriage. We live in a day of growing permissiveness. While animal-like promiscuity is universally rejected by almost all professing Christians, premarital permissiveness is becoming increasingly tolerated. The idea seems to be that if two people truly love each other, there is no reason why they should not enjoy the full expression of their love right now.