Reading through all these mom's views on the topic I cannot avoid the feeling that your position is counterproductive. Everything you forbid, be it alcohol, tobacco, hemp, or sex is going to be interesting for teeneagers. Look for example at statistics on teenage hemp usage in countries where it is not illegal to posses and smoke (such as the Netherlands or Switzerland). The coolness factor is much lower for the kids than in countries where it is illegal (like Great Britain or Germany) and so is hemp usage.

Informing them well but then giving them all the freedom to chose and all the support they need (including condoms - btw. what a stupid idea not to give them condoms) sounds much more fruitful for me. E.g. my parents always told me what's up with and what they think about alcohol/sex/whatever. And they told me what they would me expect to do reasonably. But then they let me decide. And what was the outcome? I didn't drink excessively, I never smoked tobacco, I tried hemp a few times (can count with one hand), and I waited with full sex till I was 21(!!!) and madly in love.

You can say this is just a matter of luck or just a coincidence. Right, very possibly so. But then take a close look at statistics on teen pregnancy in different countries. The teen pregnancy rates in the United States are considerably higher than in Great Britain, Australia, Germany, France, the Netherlands, or Japan. Maybe it's my "Old European" bias, but in my mind map in the United States the average stance on teenage sex is pretty "conservative". At least, compared to countries like Great Britain, Germany, France, and the Netherlands (I cannot talk about Australia or Japan as I have not had the luck to spend any considerable amount of time there).

Interestingly enough, among the mentioned countries the perceived level of liberality in teenage sex pretty well matches the order of teenage pregnancy rates. Great Britain has double the teenage pregnancy rate as Germany which on the other hand has double the teenage pregnancy rate as the Netherlands. France is somewhere in between Germany and the Netherlands which pretty much matches my perception on sexual liberality.

Now excuse my rather long reply on this topic, but this meme of "they do it a lot nowadays - let's make it forbidden and hope that stops them" really gets me as sooooo wrong. Last example: In Norway they have ridiculously high taxes on alcohol (imagine 12 bucks - US$ or EUR - per glass in a simple bar). Now guess what all the teenagers (and all of the first and second year university students) do on weekends? They spend all their money on booze. And during the week? They take extra jobs after school / instead of university classes to get money to pay booze. Great.