> I'm sorry, but there are tons of young people from religious or conservative families who wait until marriage to have sex and marry young

The parent poster implied that people were highly bound by their religion; I simply offered a counterexample. I am not saying that abstinence until marriage never happens.

> and/or don't begin their sexual exploration until well into college

This is not relevant since the teaching is abstinence until marriage, not abstinence until college.