Its often the case you just can't argue against anti-drug proponents. I in my late teens was very anti-drug and after my own research and life experience I see how much of a sham the whole thing is.
Weed's addictive, LSD makes you crazy, Mushrooms make your brain bleed.
Whatever you need to tell yourself makes it ok to be anti-drug
All I ever ask from anyone is to independantly think for themselves and research both sides of an issue before taking a stance. Sadly very few do this, and thats why we have so many religious people and so many anti drug proponents.
They've been tought these things from day 1, they havent broken outside their own world of thinking, and they have strong judgements based on almost no information besides what they've been told or they believe to be true without again no real personal research into any of the topics they so argue against.
Its sad, if people truly thought for themselves and debated things that they themselves learned and 'earned' as their own opinion we'd all be better off.
Probably why DARE is so succefull, pretty slogans; no need for actual truth.