I dunno, having smoked it a little bit in my youth, I can say, personally, i don't see what the big deal is. But that's just my opinion. I think attitudes here in Oz about weed are a bit more liberal that in the US, but not as liberal as you might find in Europe. I can see how it could cause harm to some and I can see how it practically doesn't affect others at all. Not all drugs, be they legal or otherwise, will affect everyone in the same way. For example, codine (in things like neurofen, an over the counter pain killer) hardly works for me and causes an asthmatic response in me. But most people I know can use it without any side effects at all. Another, my Dad can't take asprin due to allergies. I'm not into it any more because, defense force membership notwithstanding, I never liked the lethargy that would ensue. I'm keeping much more active than I did when I was first at Uni a decade ago and it's much easier staying healthier now, no longer smoking, eating and exercising right.
Now, that said, I think this makes perfect economic sense right now. If it's legalised, think about how the food services sector would be booming, selling munchies to it's ripped patrons. It'd be a gold mine! And at least there'd be no fighting amongst the munters, not like alcohol... Like Bill Hicks said, it's impossible.