I can hear tdadams now: "Not this again". Yes, he dances well doesn't he.
Some libertarians make a lot of sense in some ways, but when it comes to issues of morality it seems as if they haven't thought their position all the way through. And that's why they dance around answering questions which comes across as obfuscation. At least that's how I see it.
That is because libertarians believe that individual acts can be isolated. They can not ever be. To some extent, even what I decide to eat for dinner has a wider impact (if small in this particular case).
We are social beings. We don't form societies because we don't have anything better to do, we form societies because we need them to survive.
Shalom.