[cmh89]

Basing anything on one social experiment is not wise.

“The weight of scientific evidence shows these programs do not help young people delay initiation of sexual intercourse,” says co-author John Santelli, professor of Population and Family Health at the Mailman School. “While abstinence is theoretically effective, in actual practice, intentions to abstain from sexual activity often fail. These programs simply do not prepare young people to avoid unwanted pregnancies or sexually transmitted diseases.” [0][1]

Further, abstinence only sex education is positively correlated with teenage pregnancy rates

"After accounting for other factors, the national data show that the incidence of teenage pregnancies and births remain positively correlated with the degree of abstinence education across states: The more strongly abstinence is emphasized in state laws and policies, the higher the average teenage pregnancy and birth rate. "[2]

Informing youth about the realistic outcomes of actions, whether its sex or taking drugs, is going to be a lot more effective than just telling them not to do it.

[0]https://www.publichealth.columbia.edu/news/abstinence-only-e... [1]https://www.jahonline.org/article/S1054-139X(17)30297-5/full... [2]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3194801/