The biggest flaw with Libertarianism is that everyone on earth realizes it is a ridiculous system. There is not a single libertarian state on the face of the earth. The closest to a Libertarian utopia is Somalia with no government, no rules and every man for himself
So the only "sucessful" system is ......what?
Where?
Is there any government that has One Idealogical system?
Korea Perhaps.....
Its a little silly to believe any system is "ridiculous" because it doesn't manifest itself in its pure form anywhere on Earth. The reaction is probably a result of a deep ignorance of most things, but political systems in particular.
I'll give you a successful system.....the United States of America. It has generated the most powerful and successful country in history. What made America turn the corner from a second rate agrarian system with a fear of global entanglements was the emergence of a strong central government
It was a strong central government that built the railroads, laid a communications structure, built our highways, established the military that is the strongest on earth. It is also a strong central government that established Social Security, looked out for the peoples welfare, education and health
None of it could have happened with Libertarians calling the shots