But I still think you're conflating two issues, Bit. I honestly get the impression that you think being anti porn is, deep down, being anti sex. And it isn't, it really isn't. I see nothing wrong with realising that most teenagers will want to have sex - and that the aim of sex education should be to enable them to have sex safely, enjoyably, in a mutually respectful situation when they have the emotional maturity to do so, and to help them develop a sense of their own boundaries, help them to avoid people who are coercive/abusive, and educate them in how not to be coercive/abusive (even by accident).
You can believe this and still want to say to them "think about the circumstances of the production of most porn - do you really want to be jerking off to something that might in fact be filmed evidence of a real rape taking place?" Just as you want to say to them "you know that novel where the 'hero' rapes the woman but she comes to enjoy it - that's made up - do not emulate it in your real life." (And you may, at this point, say "but that's conflating real life and fantasy/novels" - but the figures on date rape and coercive sex suggest that there must be a fair few men out there not managing to make that distinction).
You seem to think that because sex is, absent all complicating factors, a jolly good thing that we must never pass moral judgement on any expression of sexuality. I think this is wrong - all sex takes place, has to take place, in a moral context. Even if that moral context is, say, in a one night stand being respectful to your partner, checking out that they're okay with things all the way through, using a condom, being respectful to them afterwards - in short treating them like a human being rather than an inflatable doll. It is not wrong to set moral limits on one's sexual activity, nor is it wrong to seek a partner who shares a moral world view with you (which might include saying "if you feel you cannot live without porn, then you are not the sort of person I wish to be in a relationship with" - and expecting them to be honest with you, even if that means the end of the relationship, not lie about their porn usage).