I don't think libertarianism works, it relies naively on how the free market is omnipotent, how freedom is everything and how having a small government is somehow good. There are no countries that are entirely libertarian, that also tells a lot about the ideology's applicability in practice. A brilliant book about why libertarianism doesn't work is a book "A Libertarian Walks into a Bear". In the book, a group of libertarians decides to take over the small town of Grafton in New Hampshire en masse as part of their "Free Town Project". Of course this group cares neither about the town's original inhabitants nor their rights. What's the result? They hollow out pretty much everything from the library, to the school, the fire department and the police. No regard is given to any laws on hunting or food disposal, and that lures in bears, who turn so aggressive that they invade people's homes. In addition to bears, sex offenders and all kinds of criminals are also lured into Grafton. It's pretty entertaining book, I recommend it.

Another reason why I dislike libertarianism is that it can function as a gateway to fascism. This is a known phenomenon. Several key figures in the alt-right for example used to be libertarians. I stumbled into a clip from some American Libertarian Party convention where Richard Spencer was with Ron Paul. I had to rub my eyes a bit.