[averros]

Why stop at plants? If someone chooses to take whatever substance it's no one else's business (unless others have to pay for the medical treatment afterwards... but that is easily solved by NOT making others pay). The actually dangerous drugs - the ones (SSRIs, notably) which have suicide as a side effect, sometimes resulting in people going on murderous rampages - are quite legal and widely prescribed. Go figure.

[sokoloff]

How do you stop paying for medical outcomes? And why should we care?

As part of insurance pools, today I pay for extreme sports injuries, alcohol and tobacco related chronic problems, outright stupidity, and obesity related issues.

No one seems to balk at that; why should THC or magic mushrooms be fundamentally different? Even if they “should” be, how could they be?

[i_am_nomad]

I agree with you in the sense that refined sugar in processed foods should be highly regulated, as society pays an enormous cost for it.