If you are scared of getting shot by people that you think shouldn't own guns, then it means you haven't trained enough with your own gun.
(I personally don't believe this, but its a fun way to troll pro gun people)
But if you mean more generally people who drink, vs. people who smoke weed, I would expect to find the type of people who use illegal drugs (even weed) would be far more concerning on average.
Drugs that are a strong indictor of underlying psychological issues like Heroin, maybe. But for weed that's just far fetched, especially compared to alcohol.
The connotation that because marijuana is an “illegal drug” in some places means those people are more inclined to violence is borderline absurd. Violence is more likely to happen to producers, and sellers, because they have no access to the police. Producers and sellers are also categorically different than someone buying it to consume it.
Can someone who consumes weed be violent? Sure, but I would highly suspect it’s correlation and not causation.
however as it's a synthetic drug i don't think it's in the same category as quote unquote "regular" cannabis
And FWIW- I used to know body builders who would take Rohypnol in extremely small doses because it’d make them feel drunk without the calories.
Which, tangentially, is insane considering how fucked up I was from (what I assume was) Rohypnol— as it was the most insanely drunk I’ve ever felt after consuming a single beer. I wasn’t the intended target, but all things considered I’m glad I was the one who had to tank it because the alternative would’ve been awful (one of the ladies in my group who got the beers).