I deleted my comment mostly because I'm not interested in debating libertarianism, it's not personal.
You made a remark about the government being like a parent figure. For me it was always too easy to focus on government waste and abuse because I grew up with abusive parents. As I learned to separate myself from them as much as possible and heal from the damage, it was easier for me to make some kind of limited peace with the current system, as non-ideal as it is. I now see it as the least bad viable option.
I don't know if that makes sense, but I guess that's why I personally don't really want to go down the road of debating highly alternative societies, libertarian or not. I guess I'm just tired of it.