I know alot of long time users. Guys that smoked 4+ joints a day for years. Every last one of them now has some sort of anxiety disorder, mental problems, depression, you name it. Not to mention the fact that not one of them is very successful in their careers or family life.
Not to contradict what you're saying, because I believe you, but I know people who drink a case of beer a day, and they're not particularly healthy or successful either. Yet beer is legal. Just sayin'.
I know alot of long time users. Guys that smoked 4+ joints a day for years. Every last one of them now is a normally adjusted, happy and productive contributing member of society. Not to mention the fact that every single one of them is very successful in their careers or family life.
Never met anyone who smoked pot who had anything like those problems. But have known (and been related to) many who died or became completely screwed up because of booze. It is doubtful your friends only smoked pot. Chances are they had multiple addictions in addition to smoking.