Hmm...that's exactly the perception that keeps it illegal, me thinks -- fear that use would go way up and people would be smoking it and getting stoned in public -- not that that would be bad thing from my perspective.
\i'd don't think i'd change that much. i mean, i can actually only smoke so much anyway, since i'm pretty much useless when I do. and if i smoke TOO much, i don't get the feeling that i like from it in the first place.