For all you posting negative effects as a reason for it to stay illegal, just remember that you support drugs like alchohol and nicotine being illegal too.
In my book, illegal substances=the bad kind of drugs
Those aren't illegal. I don't think nicotine should be legal. And 1 beer a day is actually good for you, as well as being used for cleaning, disinfecting, and harmless dishes.
short-term memory loss doesn't really matter when you're with your friends the whole weekend
That's another reason why it's bad for you, indirect consequences. Not remembering what you did 2 minutes ago isn't really a good thing, and it can get you into trouble both physically and legally.
All in all, I trust the scientific community and our government to make the right choices.