Ah! And therein lies the rub. Because "they" lied to you, and told you terrible terrible things were going to happen to you when you smoked pot. And guess what happend when you finally tried it and didn't die? You said to yourself.. Hell! Maybe they are lying about cocaine/speed/heroin too?
That's one of the problems with our governments approach to drug education. They want to classify all drugs as being equally bad. Which of course is a load of sh-t. And when kids figure out that it is a load of sh-t and realise that they have been lied to about drug A. Well then they don't believe the truth about drug B. Though it maybe true.