It takes five thousand dollars in stolen goods to sell for one thousand on dollars on the black market. Therefore to support an individual's addiction under prohibition he would need to steal five thousand dollars worth of goods weekly. This inflation causes a drug user to be unable to pay for their addiction by lawful means, forcing them to steal or sell drugs. Drug price inflation costs society ten billion from theft alone each year. It takes the lives of law enforcement officers and drug users to continue drug prohibition.
More people die each year as a direct cause of drug prohibition than from overdosing on drugs.
There are ten thousand homicides each year directly attributed to the War on Drugs. This needle sharing makes a user seven times more likely to get AIDS than to die from an overdose. The Drug War has failed to stop drug use and has destroyed rights in its effort to do so. It has tried to enforce a view of morality on its citizens, which is an illegitimate role of government. The ideology of the War on Drugs is built on the violation of rights and therefore it's logical that it has failed.