Those men had sex with other people who had sex with other people. The number of contacts finally added up to 1,660. You probably would have had 1,000 dead people by now. Abstinence prevents the spread of STDs while safe sex programs do not. Condoms are not always effective even when they are used correctly and consistently, and most sexually active people do not even use them correctly and consistently.
Abstinence is the only way to prevent the spread of a sexually transmitted disease.
Fourth, abstinence prevents emotional scars. Abstinence speakers relate dozens and dozens of stories of young people who wish they had postponed sex until marriage. Sex is the most intimate form of bonding known to the human race, and it is a special gift to be given to one's spouse. Unfortunately, too many throw it away and are later filled with feelings of regret. Surveys of young adults show that those who engaged in sexual activity regret their earlier promiscuity and wish they had been virgins on their wedding night.