Because this government is so scary. The biggest threat to my liberties right now are PUBLIC THREATS. On the other hand, people who live without government in many areas of the world find out that even a bad government can be preferably to no government, because PRIVATE THREATS to liberty multiply in such environments.
So that is a tough choice. but I think that is leaving out some of our options. Localism is the solution. Centralized, unaccountable, inescapable government is one extreme, which empowers public threats to our liberties, and Anarchy, no government, is the other extreme which empowers private threats. The solution (well, a virtuous population is the best solution, but I mean system solution) is in the middle- decentralized government. The spectrum is Centralized Government- Decentralized Government- No Government.
When government power is localized it is both more accessible and accountable to the people and also easier for individuals to leave its authority. It basically lowers the "transaction costs" of fleeing bad government- which puts market pressure on government to behave.
How to KEEP government decentralized is the key, and that is the question Localism answers. Basically 14 things have to have SUFFICIENT barriers to centralization in place in order to maintain decentralized government. http://www.amazon.com/Localism-A-Philosophy-Government-ebook...
Localism is for people who can still sleep at night even though somebody they don't know in a city they have never been is doing things differently. ("Localism, A Philosophy of Government" on Amazon for Kindle or Barnes and Noble ebook websites)