The great flaw in libertarianism is egalitarianism. People are unequal, groups are unequal, reproductive roles are unequal.
Superior people need to rule inferior people or else inferior people will cause problems for each other and for their betters. Superior people need to be more free. Inferior people cannot handle freedom, need supervision, discipline, and control. Inferior people need to be substantially less free.
Equality worked by consuming the social capital created by inequality. Now, however, with tax consumers (single mums, government employees, quasi government employees such as human resources, and people on welfare) outnumbering and outvoting tax producers, we have finally run out of social capital. Increasingly, young white males do not, cannot, aspire to have wives and children, because doing so will likely result in the state taking his children away, nor to save for retirement, for the grasshoppers will devour what the ants put aside. For people to have a reason to save and invest, those who save and invest must have superior political power to those who do not. Children need fathers. For children to have fathers, fathers must have authority over their families. For the economy to function, property must be secure. For property to be secure, those who have property must have political power over those that do not.