Medical uses should also be expanded, IMO. I have anecdotal evidence (so, well, low value as evidence, but enough to know it works that way for
some people) that it can help with erectile dysfunction, for instance. Probably hell of a lot cheaper to produce than little blue pills.
As for its use in treating things like anxiety and depression, while self-medicating is not something I generally approve of, I do think it's a better option than self-medicating with alcohol, for instance. Doesn't mean I am a proponent for using it that way without a doctor's say-so, mind. (And I have on rare occassions self-medicated against acute anxiety with alcohol, because my damn pills were an 8-hour flight away. I just recognize that it isn't a good long-term tactic, even if it solved my immediate problem at the time. But my alcohol tolerance is also extremely low.)
That's not a good analogy;
@SSJ3Mewtwo specifically mentioned certifications, and he works in a highly regulated industry (which fast food isn't, in the same sense). Closer, but still not a great equivalent, would be a practicing lawyer having a significantly better grasp of law than a layperson.
If you're going to continue insisting that marijuana is toxic, a poison, etc, you should link the scientific studies you're basing those claims on. Saying your sources are off topic so you won't link them, while continuing to repeat information you got from them, is pretty hypocritical.