Yeah, I think the "pot caused people to drop out of school" theory is lazy personally, they dropped out of school because they were lazy in general. Personally, from what I have seen from peers, co workers, and life in general, booze has caused a lot more people to "lose" themselves in school, professional lives, relationships then pot has ever had (and it's not even close) As far as anxiety or any real side effect? Numerous studies have shown that isn't the case at all when it comes to pot. Lazy people will remain lazy, non lazy people will remain non lazy.