Your judgments are showing.
I didn’t tell kids that sex was OK.
I told them that if they were going to have sex, it was their responsibility to protect themselves and their partners.
If telling kids not to have sex actually worked as a regnancy prevention strategy, it’s likely a good many of us wouldn’t be here. A bit of genealogical research uncovers an astounding number of 6 and 7 month first pregancies that survived to adulthood.