Shoot, I don't even view abstinence as an ideological view to be supported. Sex is one of the great things in life, one of the few things that make life worth living. Like a good meal, or a good book, or some really good music. Except that sex feels better than all of those.
Considering this obvious truth, abstinence is just attempting to deprive people of a great joy. Yeah, I get it, kids don't need to be having sex, due to the possible repercussions. And yet, we already know that they aren't inclined not to do it just because of that little thing called consequence. So, abstinence only classes are clearly a massive waste of time. You need to educate kids on what can happen if they have sex, and educate them on ways to protect themselves, because that's way more important than a few parents sensibilities.
Honestly, I'm tired of sex being viewed as some kind of dirty thing. I mean, sure it can be, if you know how to go about it, lol. Generally though, it's an enjoyable activity that can lead to a life! How is this so horrible?