Here is an interview with Milton Friedman. I think you will find it interesting, especially this part:
"I'm an economist, but the economics problem is strictly tertiary. It's a moral problem. It's a problem of the harm which the government is doing.
I have estimated statistically that the prohibition of drugs produces, on the average, ten thousand homicides a year. It's a moral problem that the government is going around killing ten thousand people. It's a moral problem that the government is making into criminals people, who may be doing something you and I don't approve of, but who are doing something that hurts nobody else. Most of the arrests for drugs are for possession by casual users.
Now here's somebody who wants to smoke a marijuana cigarette. If he's caught, he goes to jail. Now is that moral? Is that proper? I think it's absolutely disgraceful that our government, supposed to be our government, should be in the position of converting people who are not harming others into criminals, of destroying their lives, putting them in jail. That's the issue to me. The economic issue comes in only for explaining why it has those effects. But the economic reasons are not the reasons.
Of course, we're wasting money on it. Ten, twenty, thirty billion dollars a year, but that's trivial. We're wasting that much money in many other ways, such as buying crops that ought never to be produced."
Imagine that, immoral to continue prohibition.
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Milton Friedman was consistently liberal on social issues so holding him up as the quintessential conservative isn't very convincing. He was pro-abortion, pro-prostitution and pro-pot.
He and others like him are why conservative movement is in trouble. They swallowed the liberal kool-aid on social issues. They're smart when it comes to the left and fiscal policy, but they're too stupid to realize that the left concentrated on social issues just as much if not more in order to change the minds and hearts of people.