We could discuss the social harms of substance abuse all evening, but at the end of the day I'm not harming anyone when I take a puff in the comfort of my own home.
Well, except for all the murder involved in growing and shipping it. But except for that, yeah. I guess if you live in a legal or medical state it's possible to get murder-free pot. But I haven't smoked pot for 25 years for this and a small handful of other reasons.
Those are artifacts of it being illegal, if it was legal those wouldn't be problems.
But that's not going to kill the cartels, they have other interests. I don't even think it would affect their style all that much because it wouldn't happen suddenly, it will be state by state, with the Fed finally going along after it's de facto legal everywhere.
While that gradual process plays out, as it is in fact doing right now, the cartels will just shift their focus elsewhere. Gradually. I think what's more likely is that the Mexican oil industry, and other cartel interests, will long for the days of illegal drugs.