Meth, one of the amphetamines was once used until a drug very close to it came along, methylphenidate, a.k.a., Ritalin.
Disingenuous? No, not at all since when calls are made for legalization what is really being asked for is societal approval for the users choice of use.
What produces a “black market” is the desire of people who will feed their appetites regardless the cost, to themselves or others.
Societal approval is not the same as legal, or vice-versa.
Salvia, a rather powerful nasty sort of drug, is perfectly legal in most states. Yet it is hardly accepted by society. Heck, it’s hardly known by society.
And it is disingenuous to call cocaine and meth legal drugs when their black market usage is overwhelmingly greater than their legal usage.
What creates a black market is legality. Be it from trading in a product that is completely illegal, or trading in what may be a legal product (cigarettes for example)to avoid a heavy taxation on said product. A black market is just like any other market in a capitalistic society. The product has demand, and someone goes and fills that demand. Since when does there have to be someone getting hurt in the ordeal? If floormats were banned and I bought one from the black market floormat dealer, who is getting hurt?