Liberty is a great means to an end. We use our liberties to promote societal health and human happiness. But my problem with the Libertarian movement is they completely flip it around and value liberty OVER societal health and happiness.
Liberty - in degrees - is fundamental to fairness and equality. But liberty - as an absolute - is just plain chaos. We live in societies because we know that working together we can achieve exponential more than if we all worked on our own. And Libertarianism seems to ignore this basic truth. Freedom is about how we can all work together with the maximum amount of liberty. But freedom isn't infinite liberty.