The idea that pot doesn't have any long-term effects or that it makes you smarter is laughable, I've actually heard people say this lol.
Over the years I've worked with a few guys who have been lifelong pot smokers. One guy in his 50s was always zoned out and couldn't remember simple things. Another guy was so damned goofy and was just stable enough to do the job but not by much. So, I'm convinced Weed fry's your brain. Which is why I've never bothered with it not to mention the smell
.
That said, I do believe it should be totally legal and Alcohol is as bad, if not much worse in some cases.