Never confuse the reasons why there should be a government with the reasons why there is a government. Everyone (with the possible exception of anarcho-capitalists) can explain why a government should exist, but few people spend their time exploring the cold blooded reality of American bare knuckle politics.
Now as far as Absolute Despotism is concerned, when it comes to choosing between the "Republican Party" and "Libertarian Party," it's simple: Both. All that matters is advancing individual liberty. Fuck parties. Listen, we don't like it anymore than you do, but the world is governed by party politics, coalitions of power, contributors, fundraisers, candidates, endorsements, precinct captains, and getting out the vote. It's time libertarians grabbed their bayonets and dove into the political trenches headfirst. But remember your Nietzsche: "He who battles monsters should see to it that in the process he does not become a monster.”
The problem is, we’re an intellectual army full of nothing but 4 star generals quoting Hayek and Mises, going up against endless hordes of peasants with sticks chanting "change" and "Yes we can". Whenever a libertarian comes up with a plan, they're on their own, because other libertarian's aren’t down with the whole "following orders" thing. So instead of forming hierarchical groups, how about we trust the individual and form "Counsels of Generals" where each individual is simply commissioned to: "Raise an intellectual force, pick targets of opportunity, and engage the enemy wherever you find them... happy hunting." No ruffled feathers and everyone keeps full creative control over their own projects.
At a certain point, every libertarian's got to answer this question: Are you here to fuck or are you here to jerk off? If you're here to jerk off, that's cool. In your mind every girl can be a 10, and it's a hell of a lot easier than going out to the bars and mixing it up in the real world. But if you're here to fuck, you've got to get out there and make some moves. You've got to engage the real world with all its imperfections. Not every girl's going to be a 10. Not every candidate’s perfect, and you won't score a touchdown on every play. (Now ladies... that metaphor was for the guys, so in your heads just replace "jerk off" with "auditioning the finger puppets" and it should make about as much sense... Also it help's if you're into hot girl-on-girl action.)