It’s been my experience that heavy, long-term marijuana usage makes people a bit stupid. I have friends and ex-lovers who noticeably lost some of their formerly sharp mental function because of extended weed usage (and I wasn’t the only one who noticed the difference in these people).
I don’t have a huge problem with it in theory, but I hate being around people who are smoking (not just weed, but any kind of smoking) because it causes my asthma to flare up and it smells disgusting.
I’ve tried it once and didn’t notice any effects, which I hear is common for a first time. I don’t intend on trying it again in smoke form, but maybe in food, tea, or a vaporizer.