I’m probably younger than you. And yes, Freepers and non-Freepers alike have told me several variations on this. According to the, marijuana is not addictive and has never had a single case of negative repercussions.
Marijuana isn’t (physically) addictive, and no Freeper has ever told you “marijuana was the perfect substance that has never had a negative effect”. When you engage in ridiculous hyperbole like that, over and over, you lose all credibility.