Admittedly, I have lived a very sheltered life in my 43 years... I never smoked marijuana, never even saw a joint smoked by someone else (other than the movies). I am very influenced by the media and hollywood regarding marijuana, and am not able to give a very educated response to this subject at all. If it's in a movie, it's usually portrayed negatively, which may not be an accurate portrayal, at least according to many of you posting in this thread. Because of my naivete, I haven't responded since posting what you quoted here.
Banning something as a precautionary measure does seem to infringe on our liberties, but I have to admit it is hard to shake the idea that marijuana isn't bad for you. If my children grow up and, as adults, smoke marijuana, I am pretty sure I would be upset about it. Is it the stigma of smoking marijuana? Maybe it is... This is genuinely a tough one for me. I know I could find all kinds of information online, but if it is like anything else, you can support your position, whatever side you land on, using the internet.