How can anyone be against the legalization of marijuana?

How can anyone be against the legalization of marijuana? Legalizing marijuana is first knock organized crime in Canada and Quebec. If organized crime becomes less profitable, it will certainly be less attractive. We know that perhaps opt for a "real" job instead. Legalize marijuana, but also prevent consumers from rubbing shoulders with pushers. Not just a matter of social security, but often skirting the "pushers" that young people are fishing up in the middle. Again, we speak from experience. Third, legalizing marijuana, it's obviously creating a source of considerable revenue to the state. I'm for production and marketing state to control the quality of the plant used and maximize the revenue stream to the state. Finally, I would remind doctors - who are generally opposed - whether legal or not, the number of marijuana users will remain substantially the same. The example of Holland confirms this theory. All in all, a symbolic point of view, the legalization of marijuana is synonymous with freedom, collective maturity, openness and modernity. It would be a great political coup for Canada, right?