Correlation != causation. Your anecdote could just as well be about surfing (or anything really). I've known people who started surfing and got so into it that they started traveling in a van and talking about surfing all the time, not working or saving money. Should we ban surfboards to prevent this terrible fate?
> On the macro-scale, cannabis and others drugs are a big factor that fuels France suburb separatism
It's immensely frustrating when people deny any possible harm that cannabis can cause. We _know_ that cannabis can cause psychotic illness; that cannabis can surface an underlying illness that wouldn't have been a problem with cannabis use; that cannabis can make existing illness worse; that it can be addictive; that it can make violent people perpetrate acts of violence.
Importantly, this denial is counter-productive. It works against efforts to legalise drugs.
Campaigners need to be honest about the negative aspects of drug use, and provide solutions for these - because there are solutions for all of them.
The parent comment I was replying to seemed to be basing his position on one piece of anecdata and little else, thus my comment. I don't see what in my comment elicited your response but I do agree with your general thesis, with the caveat that I see it as a potentially-necessary response to counteract extensive demonization/fear-mongering by the state and temperance league style organizations. That said, the time for that tactic I feel is over, as the public is now beyond the "reefer madness"-style knee-jerk anti-cannabis bias.
> On the macro-scale, cannabis and others drugs are a big factor that fuels France suburb separatism
Do you have a citation for that?