I don't smoke marijuana; while I don't think it should be classified as a controlled substance, I'm not into the snarky responses I get when I say I don't see it as a nootropic nor quality of life enhancer.
Furthermore, I actually see it as a problem. Unlike alcohol (which can also be a problem in some ways I'm not debating that), weed stays in one's system a lot longer and won't necessarily be gone in a couple days when one has to continue work or going to a family event. There seems to be a lot of unprofessionalism and bad behavior associated with it. I think it actually can make some people (not saying all people as it depends on brain chemistry and amount) sociopathic but that's just my opinion.
People tout that it should be legalized as a medicinal drug. Do we go to the prescription store downing just whatever dosage on a daily basis? I'm not totally against herbal entheogenic compounds entirely but marijuana is a subject unto itself; it has a prominent psychoactive effect, and isn't something I can necessarily see as a nootropic or able to take a sustained amount daily living in an unaltered state. There isn't a controlled amount that goes into one's system each time and it can stick around in the system for a while especially if one takes it a lot. It has become a cultural problem in my opinion and I will not be swayed by people hating on me because of my opinion as I think it's morally sound.