YANBU to hate it.
YANBU to point out it's illegal.
YANBU to acknowledge that, like a lot of things, it can be dangerous to some people in small doses, and is pretty much a BAD thing for everyone in large doses.
YABU to find it 'distasteful'. I simply think that's the incorrect word.
I find alcoholics tragic, I am wary of those who drink way way too much and think nothing of it or those who think alcohol is 'harmless' (for the record I probably drink over the gov guidelines in general, but I still believe there's a time and a place - and sobriety should be 'the norm' in a 24 hr day!)
I think too much alcohol is unhealthy, I think some people shouldn't drink AT ALL (my brother - him and alcohol simply do not mix). I think you can have fun without alcohol, Ithink you can relax without alcohol. I do not think relying on alcohol is a good thing. I have no issue with those who are teetotal, I don't even need to know their reason.
Exchange the above 'alcohol' references and there you go.
From your OP your friends spend too much time 'not sober' their drug of choice is weed. They are no different than anyone who doesn't fall into the addict category yet spends too much time not sober.
Can you tell I like weed? I would, if 'weed' (homegrown and rather weak by preference) were legal, forsake alcohol forever. I like a drink, but I like weed more. I also keep myself in check (alcohol or weed) and would worry if I wasn't sober most of the time! For the record, I don't smoke weed so much these days purely for the fact that's illegal, and when I became a parent, I took less risks, cared more about my 'slate' being clean and it wasn't a massive thing to sacrifice, I aslo drink less, swear less etc.,
I would like to be able to grow a couple of plants, to enjoy them, as one would a fine cigar. I do not think that makes me 'distasteful' or a criminal.
However, purely on your experiences with your friends YANBU, but my friends are not distasteful, weed if not in itself distasteful, your friends attitudes could be distasteful if they don't give a shit that they're more stoned than not, and their actions are irresponsible.
YANBU to feel there's nothing more boring than a friend who's constantly off thei face, regardless of their poison.
I've given up smoking, so now my annual 'spliff' (without children around, usually when fishing at sea with my brother!) is a cookie. I look on it as a fine treat and remain unapologetic, because it's something I occassionally enjoy.
The problem is rarely the herb you use, but rather, how a person uses it.
Personal ignorance, irresponsibility and denial is the issue... addiction is the effect of THAT, not the drug. Every drug has possible side effects, the infortunate few will suffer even from paracetamol, doesn't make it evil.