I'm pro-legalization, however most campaigners for any cause tend to exaggerate the numbers and statistics in their favour.
Marijuana isn't the devil's flower, nor is it a "completely harmless herb that you can smoke all you want." Using it in moderation isn't that bad, but of course it isn't harmless.
No doubt... Then again, the anti side has been insane. Look at you reefer madness.
They all exaggerate here and there. Propaganda everywhere. Marijuana isn't a harmless drug. No drug is harmless. It might be one of the more safer drugs compared to, what, cocaine, but that doesn't mean it's 100% safe. At the moment, though, I do support the legalization of medical marijuana, although I am still not sure about recreational marijuana.
There is a plenty of propaganda on both sides. Everyone's just pursuing self-interests.