Here we can see that the trend since the beginning of the century has always been upward, both for occasional users (purple line) and for more regular users (green line). However, precisely at the time of legalization, there is a turning point that marks an even more upward trend. This sort of sociological experiment in Uruguay confirms that Friedman's intuition was right: there were and will be more additional consumers.
And this is the weak point of Friedman's argument, for perhaps his position solves the problem of criminality associated with drug cartels, but it does not solve the health consequences of individuals vis-à-vis society. In the name of free will the individual is free to take drugs, but in the USA as in many countries, either the federal or national governments subsidize the health systems with the money of all taxpayers. Therefore, the free choice of the individual also ends up affecting others: bearing the costs of health care harm. Perhaps, for this system to work coherently, we should move towards an almost 100% privately managed health care model, as is the case in Singapore. And each individual should be truly responsible for his or her "free choice" without affecting others with the costs of his or her decisions.
Let us now present some arguments of psychiatrist Thomas Szasz, even more radical than those of Friedman. “Our Right to Drugs. The Case for a Free Market” of 1992, is the work where this psychiatrist (belonging to the so-called current of Anti-psychiatry) exposes his thesis on the issue of drugs. Szasz starts from the assumption that we desire drugs for the same reason that we desire other goods in general. He states, "We desire drugs to mitigate our pain, cure our diseases, increase our stamina, change our mood, put us to sleep, or simply feel better, just as we desire bicycles and automobiles, trucks and tractors, ladders and chainsaws, skis and swings, to make our lives more productive and more enjoyable." (1992, p. 20) For Szasz, both taxation and drug prohibition are coercive and violent interventions by the state, and both are ideologically justified first and foremost on paternalistic grounds. Dr. Szasz goes so far as to assert that many alleged anti-drug programs and drug treatments are coercive "religious-therapeutic dogmas" that mask a state policy of retrogressive constitutional rights, for the right to chew hemp would even predate the right to vote, he says. The war on drugs, he asserts, is a puritanical moral crusade that wears a medical mask (1992, p. 93), where the subjects end up in “mental concentration camps”. Such interventionism implies a Sovietization of the drug market, and this would have led us to live in a social and economic order that is a "chemical communism": "Since we call state control over the production and distribution of goods and services "socialism" (or "communism"), I suggest that we call state control over the production and distribution of drugs "chemical socialism (or communism). " (1992, p. 130) In a scathing and highly ironic style, libertarian and psychiatrist Thomas Szasz attacks even what he would seem to consider a nefarious American political right wing:
"In 1979, when Ronald Reagan ran for president, he ran as a conservative, with a capital C. The liberals were hippies who had smoked pot, had their girlfriends have abortions and neglected their children. Liberals were hippies who had smoked pot, encouraged their girlfriends to have abortions and neglected their children. Such, at least, was the stereotypical image of liberal Democrats to conservative Republicans. By contrast, conservatives-exemplified by Ronald and Nancy Reagan-represented morality, tradition, and family values. These statements, in my opinion, will go down in history as the most transparent hypocrisies of the Reagan presidency. Whatever iniquities were committed in the name of drugs by Reagan's predecessors, it was he who, repeating a stupid anti-drug slogan, taught American kids to spy on their parents and report them to the police. (...) They cultivated one of the greatest, most characteristic and despicable practices of the great socialist states of the 20th century: turning children against their parents in a holy war against the enemies of the state." (1992, p. 113) (Translated from the Spanish Edition)