Whose society? Western society? What about Mexican society? South america? The native Americans used psychedelic cactus and mushrooms. You seem to be drawing relatively arbitrary lines based on your own biased upbringing

And we don't have to choose only one, that's arbitrary too. We can easily dismantle the current prohibitory system to allow for a system of regulated production and access which would improve safety and reduce overdose deaths. Most overdoses happen because of the nature of the black market. There is no regulation or testing so substances, particularly opioids, can get cut to unknown potencies depending on the person handling it. This makes it a gamble every time a person were to use rather than consuming a measured amount of a pure substance. Prohibition objectively increases harm to individuals, society, and the economy.