These are all net negatives that can be offset with net positives.
Telling them they can all smoke weed for no reason is not.
I'm actually amazed you think this way, but then again, you are a foreigner in Japan and those are constantly bitter that places in East Asia are actually not rampant with drugs and drug abused homelessness.
>Prohibition is only successful if you ignore second-order effects.
Prohibition is only successful if you want it to be, the West does not. Much of Asia did. That's the difference and it's amazing living in Asia without having to worry about a war on drugs.
>None of this is to discourage you from learning more about drug policy.
Why do you think I'm commenting here so bluntly if you think I don't know about what I'm talking about?