> In this age, there is no longer any state needs to be larger than say, 1500 square km - about the size of a large county.

Assuming a rectangle of 30 by 50 kilometers, and no organized military for defense, it would take the Russians about 30-45 minutes to reintroduce the imperial subject experience on your proposed utopia.

The reason states are required are that other people are organized in states. Now I am guessing you are from the US, the standard of your living is only made possible, by millions of men and women working seriously to guarantee it, and thousands of nuclear weapons. Take either out of the equation, and your standard of living will very quickly become untenable.

Hell, the internet that you believe can solve all the problems, is only operational because hundreds of thousands of people are continuously working on it, many of them government employees.