Popa- It is apt in this case to bring up the soda ban.
I’ll quote you again. You said, “I think it is eminently fair that the govt should prevent substances from being grown if they think they are dangerous to society.”
Do you believe it is “fair” for a government to prevent things that they deem dangerous within society?
The government of NYC decided to ban soft drinks larger than 16oz because of the danger to the society’s health. Based only on your words, you should think this is fair.