Could you explain how being libertarian means that you are a nihilist? I would think that some of the values that libertarians hold are antithetical to nihilism since nihilism holds that values don't really exist.
Libertarianism basically stems from the resulting beliefs of the Enlightenment Era (despite what others here might argue). The Enlightenment Era was divided into two portions: the Classical Enlightenment, and the Radical Enlightenment, which came on the heels of the Classical. The Classical Enlightenment encouraged idealistic principles such as justice, equality, freedom, as well as, of course, reason. The Radical Enlightenment took these principles one step further, into a more extreme sense. The Radical Enlightenment encouraged reason and logic to its utmost extent; systems such as the scientific method. This then led to what is known as mechanistic materialism, or, essentially, the belief that reason alone cannot prove values or morality; basically, what the Radical Enlightenment thinkers believed was that there is no rational way to support an absolute moral truth.
This then gave birth to scientific determinism, which in turn led to the disbelief in the concept of free will; therefore, no individual can be held responsible for his or her own actions.
We then arrive at utilitarianism; people will only do what benefits them and leads to their own personal pleasure.
This, then, takes us to nihilism; the disregard and disbelief in all values, morals, and systems that support them. People will only do what benefits them as an individual; hence, libertarianism.
Granted, this is
not the form of libertarianism we see in our country; but it is, essentially, the skin and bones definition of ideal libertarianism.