Libertarians are quick to see hidden costs of ignoring libertarian principles, and slow to see such costs in adhering to them. For example, Tucker Carlson reported in the Dec. 31 New Republic that Ron Paul wants to end the federal ban on the interstate sale of unpasteurized milk. No one should want to drink unpasteurized milk, and almost no one does. Paul himself doesn't. But it bothers him that the government tells people they can't.
A similar flaw affects libertarian thinking about government-mandated income redistribution. Extreme libertarians believe this is immoral or even unconstitutional, and even moderate libertarians disapprove of social welfare programs as an infringement on the freedom of taxpayers. But freedom is only one of the two core values our nation was built on. The other is equality. Defining equality, libertarians tend to take a narrow view, believing that it means only political equality with no financial aspects. Defining freedom, by contrast, they take a broad view, and see a violation in every nickel a citizen is forced to spend.
Libertarians ask: By what justification does the government concern itself with inequality, financial or otherwise? They are nearly alone in asking this question. Even conservatives claim a great concern for equality of opportunity, while opposing equality of result. And the reasons seem obvious: some degree of material equality as a necessary basis for political equality; the huge role of luck in getting each of us to our relative stations in life; etc.
But nothing like this is obvious to libertarians. They force us to think it all through from scratch. Good for them.