Why? Can you actually cite any study that has demonstrated Pot having an affect on someone that is anywhere near similar (in terms of being that bad)? I'm serious. Because I haven't seen any. My point is that a mind-altering drug is a mind-altering drug. I'd say that you're acting significantly biased because a) you're on an anti-depressent which is legal and b) pot is illegal, poorly studied, and has an extremely negative social stigma attached to it. They're all doing something very similar. I can sit here and, pretty confidently, say pot certainly has some uses, and it's denigration in mainstream American culture is both hypocritical and absurd given our near-glorification of alcohol and (until recently, at least) cigarettes - drugs that have much-worse proven effects on the human body. This is on top of our glorification of mind-altering prescription drugs (anti-depressents, ADHD problem solvers, etc.), which we take for granted are acting in a very similar way.
And whoa, I just realized this, what you said has nothing to do with being young. You're making the argument that if someone is suicidal, this drug is just giving them the energy to carry through with it. Maybe this is more common in young people due to societal factors, but this is actually much more daming for these drugs than anything I've heard before, and has everything to do with the drug itself.
Edit: I'm out. I know you'll rebut this, but we'll just have to agree to disagree. I see very little difference between the two substances, whil you see lots. I have my own anecdotal evidence to rely on, and you have yours. I would only like to say that damning the substance, without trying it, is foolish at best considering how little we know about it scientifically.