You do pay people growing plants that don't provide a good to society and you do alter your state of mind which affects others and you do destroy your health a cost which also payed by others.
The argument you used earlier could be applied to literally anything, so if it's valid, literally everything should be a crime. I don't think the argument is valid.
You can't counter-argue that streaming movies is good for society, but growing plants isn't. I think it's the other way around, actually.
Maybe I shouldn't have used a bunch of euphemisms that sound ridiculous when taken literally.
Honestly I am neither a medicine, nor a chemist, nor a psychologist, so I don't feel qualified to discuss anything here.