The objections there are mostly "It'll lead to evil nookie!", and to a lesser extent "It's not 100% reliable"(as though anything in life is...oh wait, abstinence can't lead to pregnancy, because the female body has ways to try to shut that whole thing down - how could I have forgotten?). They're stupid objections, but to people who literally believe that sex outside of marriage will lead to an eternity of torture, I can sort of see how they connect the dots.