Again, much of mankind has had little experience with marijuana; it was criminalized in this country after generations of legality, amid a wave of demagogery about "crazy Mexicans" and white-woman seducing Negro jazz musicians.
You seem to believe that because of ludicrous stereotypes in the past, until someone has tried marijuana and decided that it is bad, they cannot correctly favor keeping it illegal.
As usual, you mischaracterize my argument. I believe that because much of society has had little experience with marijuana - as illustrated by the ludicrous stereotypes of the past - "society’s experience and settled judgment" is a weak argument for continued illegality.
Yet, from the 1970s onward, most American adults got to know about marijuana from using it or having friends or family who used it. Enough have had a bad experience with marijuana that it has remained illegal.
Actually, here's what's been going on from the 1970s onward, as most American adults got to know about marijuana from using it or having friends or family who used it:
So also has there been an accumulation of medical research over the last several decades that increasingly validates opposition to marijuana legalization.
No, it validates accurate labeling and appropriate regulation, as is done with many legal though potentially hazardous products - including alcohol, which is more addictive than marijuana, more violence-increasing, and the only one of the two that can lead to fatal overdose.