There is scant medical evidence that soft drugs such as cannabis or MDMA ("Ecstasy") - and even cocaine - have an irreversible effect on brain chemistry or functioning.
Last month an almighty row erupted in Britain when Jon Cole, an addiction researcher at Liverpool University, claimed, to quote "The Economist" quoting the "Psychologist", that: "Experimental evidence suggesting a link between Ecstasy use and problems such as nerve damage and brain impairment is flawed ... using this ill-substantiated cause- and-effect to tell the 'chemical generation' that they are brain damaged when they are not creates public health problems of its own".
Moreover, it is commonly accepted that alcohol abuse and nicotine abuse can be at least as harmful as the abuse of marijuana, for instance. Yet, though somewhat curbed, alcohol consumption and cigarette smoking are legal. In contrast, users of cocaine - only a century ago recommended by doctors as tranquilizer - face life in jail in many countries, death in others. Almost everywhere pot smokers are confronted with prison terms.
The "war on drugs" - one of the most expensive and protracted in history - has failed abysmally. Drugs are more abundant and cheaper than ever. The social costs have been staggering: the emergence of violent crime where none existed before, the destabilization of drug- producing countries, the collusion of drug traffickers with terrorists, and the death of millions - law enforcement agents, criminals, and users.
Few doubt that legalizing most drugs would have a beneficial effect. Crime empires would crumble overnight, users would be assured of the quality of the products they consume, and the addicted few would not be incarcerated or stigmatized - but rather treated and rehabilitated.
That soft, largely harmless, drugs continue to be illicit is the outcome of compounded political and economic pressures by lobby and interest groups of manufacturers of legal drugs, law enforcement agencies, the judicial system, and the aforementioned long list of those who benefit from the status quo.
Only a popular movement can lead to the decriminalization of the more innocuous drugs. But such a crusade should be part of a larger campaign to reverse the overall tide of criminalization. Many "crimes" should revert to their erstwhile status as civil torts. Others should be wiped off the statute books altogether. Hundreds of thousands should be pardoned and allowed to reintegrate in society, unencumbered by a past of transgressions against an inane and inflationary penal code.
This, admittedly, will reduce the leverage the state has today against its citizens and its ability to intrude on their lives, preferences, privacy, and leisure. Bureaucrats and politicians may find this abhorrent. Freedom loving people should rejoice.