As someone who has experienced (and quit) just about every intoxicant out there that doesn't involve a needle, I can safely say I've seen a lot of fights involving drunk people, and never one involving people who were high on pot. I'm also a lot more afraid of drunk drivers than I am of stoned drivers. (Although I firmly agree no one should drive or operate machinery under the influence of any intoxicant.) My state fairly recently legalized recreational cannabis sales (although they won't have the governmental rules and regulations set up for retailers until next year), and I have no objection to the idea. We've allowed medical marijuana here for quite a while, and I know a number of people who have legitimately benefited from having access to it. (Particularly people who previously had dependancies on prescription opioids.)