I don’t like how the line is blurred between possible medical uses for marijuana and “recreational” uses. This allows for addiction to marijuana under the guise of medicine. Maybe the weed should be legal like alcohol. Then if legitimate medical uses for marijuana are known - suppose it helps glaucoma or helps manage chronic pain safer than other drugs - then a doctor could help a patient manage their use. I don’t think the current situation is ethical. Quack doctors encourage people to self-medicate and they make a big profit doing so. There isn’t seen a difference between someone who gets addicted over a false medical pretense and someone with a real problem like chronic pain who maybe could be helped in a non-addictive way. Americans seem to go to extremes - either prohibition or a system that encourages addiction.
That would be a better solution - but conservatives reject the utopianism of making the best the enemy of the good.