… would non-outlaws do drugs?
Russell Roberts at Cafe Hayek seems to think not:
This planet would be a better place if we allowed things that were immoral to be merely looked down on, rather than to be against the law. The war on drugs presumes that if drugs are legal, people will take more of them because somehow, making them legal sanctions them.
Now, I know Russell Roberts to be a competent economist — he’s a professor of economics at George Mason University and has a Ph.D. from the same place as I do.
So he must know that the notion that “if drugs are legal, people will take more of them” is more than just a “presumption” but an inevitable conclusion of the accepted economic theory — and it has nothing to do with whether “making them legal sanctions them”, but with the principle of utility maximization. In other words, a consumer of anything, legal or not, optimizes consumption of each good (or service or activity) based on how much benefit (”utility”) that good provides, offset by how much the good costs to obtain, and subject to total resource contsraints (mainly time and income). If the benefit of a particular good remains the same, but the cost goes down, people will consume more of that good. Maybe not every individual consumer, but consumers as a whole. Making drugs illegal increases their cost, if for no other reason than there is a greater-than-zero probability of getting caught and punished for using them. Making drugs legal removes this portion of the cost, and reducing the cost increases the optimal level of consumption (from the standpoint of the drug consumer). In addition, to compensate the seller for the probability that he is caught and punished, the price paid is higher when drugs are illegal. If drugs were made legal, sellers would be willing to sell them at a lower price, since they would not have to bear these costs. (Of course they’d be happier keeping the price high, but competition would force them to lower it to reflect lower costs.) Furthermore, the illegality of drugs requires them to be produced in secrecy, meaning they are probably not produced at the optimal scale. If drugs were legalized, they would probably be mass-produced (and maybe even sold at your local Safeway), which would further lower the cost.
In short, removing the legal prohibitions against drugs removes the possibility of being punished for using or selling them, and these will both reduce the costs, and therefore increase the consumption of drugs. This could occur either by increasing the quantity of drugs consumed by people who consume them even when they’re illegal, or increasing the number of people who consume drugs, or both.
The only possible objection to this argument is the notion that people use drugs because they’re illegal. I’ve heard this argument, but I don’t find it plausible. Sure, there’s a “rebellion” element to drug use, but if drug use is socially stigmatized (”looked down on” as Prof. Roberts says), that rebellion element will still be there. And, is there any evidence that consumption of alcohol decreased after prohibition was repealed? Given that it seems more than 80% of the people I know drink alcohol at least occasionally, I find that hard to believe.
Note acknowledging all this does not require Prof. Roberts to change his position in favor of legalizing drugs and keeping them “looked down on.” He could simply say that in his view, the social costs of keeping drug use illegal exceeds the social costs of the increased drug use that would result from making them legal. That’s partly an empirical question, but partly a judgement call based on the values one attaches to the non-monetary consequences of drug enforcement and drug use.