I think Libertarianism is incompatible with the way that humans operate as a society. Almost all flavors of libertarianism puts an individual's right to live as they choose as long as that doesn't violate the rights of others through force or fraud. Humans like to associate themselves into groups, and in almost any group there will be an imbalance in power, whether that's economic power, physical power (strength), or even something as abstract as eloquence or how outgoing you are. The issue then becomes that someone somewhere has to enforce the right to not be forced into giving up rights. In the classical construction of how libertarians view government, it is very easy to become more powerful than those meant to enforce limits on power. Even in our current political system, you see this when companies will spend more on their anti-trust court cases than the entire FTC spends total in a decade. Libertarianism has no mechanism to keep the enforcer the most powerful party involved