It seems like the psychosis which weed causes accrues mainly to hysterical Prohibitionists.
Subjecting someone to prison for merely possessing the wrong plant, medicine, or liquid spirits is the height of nanny-state authoritarianism, and no amount of "what about the children" hand-wringing can ever excuse such Tyranny.
A government which can imprison you for possessing a plant is a government that is too big and with too much power.
Those who argue for such arbitrary law are using the same reasoning which the left uses in order to justify their various Tyrannies.
I categorically reject such authoritarian logic, from either side of the political spectrum.
When somebody directly infringes on somebody else's rights, via force, fraud, or negligence, that is when a crime has occurred, and then and only then is when criminal prosecution is warranted.
When it comes to the challenging, perilous notion of human freedom, warts and all, the Prohibitionist mind often seems more warped than the even the most despicable drug addict.
"Those who know what's best for us must rise and save us from ourselves."
This is true only in about the same sense that 99% of what we eat, drink, and breathe "can" cause cancer. In the U.S. schizophrenia rates have remained flat for several decades while pot use has risen ... the sky has not fallen and will not fall.