Lots of hackers are libertarians, because there is a lot of logic behind the free market. But I think it's a terrible idea to let the free market handle absolutely everything, as advocated by some libertarians. Free education is a great thing that society offers even if the system isn't perfect. The free market has completely failed with healthcare in the USA. We need police and fire protection. I'm glad that every road isn't a toll road.
Imagine an economically very free society with an average taxrate of 25%. What services should this government provide for free or subsidize?
I think government should provide our National Defense, the Justice System, and Police.