The difference between libertarians and collectivists is that libertarians are honest about that, that's all.
If they were really honest they wouldn't be mooching off of the collectivists. They would move to a free place and use their own rules-free Internet, drink their own unregulated water and send their children to their own schools free from oppression.
Where's that ? Do you know any place on earth where collectivists haven't tried (and succeeded) in taking the power - by their sheer number, or by using force ?
But you're wrong about liberatarians having to live according to their own rules. I for one, am a libertarian living on purpose off state funds. Because as a libertarian, my aim is not to improve the world, or impose my vision, but to get the best out of it for myself (which is the definition of a libertarian), with the minimum to contribute to others. And living on state funds allows me to do exactly that: obtain and not give.
It is because I think most people are like me, that only a libertarian-based system is not going to sink by the egoism which is in my view the characteristic of a conscious individual. All other systems are going to sink through collectivist corruption. But of course, I'm the first, in the frame of a collectivist system, to take all advantages that go with that corruption.
As I said, I'm simply more honest about that than others who have their mouth full of "the common good". I think most if not all people ACT like I do, but many of them delude others (and maybe even themselves) about their caring for the common good - which they don't.
The honest truth is all the libertarian attempts at independent social organization invariably fail either:
Libertarians usually don't attempt at anything socially. By definition. Because they don't want to get involved in other people's business. They are a-political. They don't 'want' a specific society (if they do, they would stop being libertarians by definition).
They just propose it intellectually, but they can thrive in just about any society. Some societies don't allow them to EXPRESS what they think, but they think nevertheless like everybody else: own advantage !
If I would be living in a communist system, I would probably be a member of the communist party. If I were living in a nazi system, I'd be behaving as a good nazi. Simply because that's where my advantage is. But I would openly say that that is totally corrupt (at least, if that wouldn't be in my disadvantage). That's what I'm saying too. I don't believe anybody who claims to do anything for the common good. For me, that is impossible. I do believe people claiming to do things for the common good, in order to obtain personal advantage by saying so.
1) because they are compulsive tightwads, skinflints, scrooges and grinches who rather die than contribute to a common good. Those are either eaten by the wild animals or easily subjugated by the organized crime gangs.
Yes. The libertarian thesis is that everybody is like that, but some don't say so. That's the difference.
2) fall prey to the internal criminal abuse from the members who simply pretended to subscribe to their ideals but in reality ripped the rest off in a confidence game.
Like everybody else, but they just say so.
The difference between a libertarian and a non-libertarian is simply, that a libertarian:
1) dares to say that he's an egoist just like anyone else
2) dares to say that everybody who's claiming to act for the common good is a lier
3) realises intellectually that any form of power given to individuals "for the common good" will lead to total corruption.
4) realises intellectually that the only "fair" form to have egoistic power-greedy individuals live together, is in a totally free society with the minimum of power given to individuals over others.
5) knows that that will never be the case, given the power-greedyness of individuals faking to care for the common good.
For the rest, like everybody else, the libertarian is an egoist, that lies if he says that he's working for the common good, and will try the maximum, like everybody else, to obtain power "for the common good" to be maximally corrupt.