[komali2]

In your first example - why aren't there more assaults on buses? Why wasn't there a gang member on the bus demanding a secondary fare or "protection fee"? Because your taxes pay for a local police department and a federal policing force. I'm not talking about "bystander effect" here, I'm talking about government resources designed to protect the population at whole. Isolated incidents will still happen. The Law, and Government, is about doing as much good as possible.

Your family is de-facto defended from murder because it is harder to commit murder and get away with it when the FBI exists, generating criminal investigation resources and distributing them among local police detectives. Your taxes pay for this and are protecting you right now. The very existence of a justice system is preventing crime. Not all crime, obviously, but a great deal. The remainder is more a socioeconomic failure of this country than a justice system failure (or, a justice system failure in that the war on drugs is policy failure enforced by the justice system).

Mutually assured destruction is more a macro-comment. Why aren't hordes of Russian barbarians coming over the hill? Because the US exerts its sovereignty within its borders. Why doesn't an organized community (government) challenge that? Because both communities would be vaporized.

Since we're on the subject, your taxes are a much cheaper way to get clean water, medicine that you are guaranteed actually contains the active ingredients you're looking for, food that won't poison you, and ensure that the city upriver doesn't dump toxic waste into the river. If you wanted to "take care of those problems yourself," you'd be running around like a headless chicken. Communitize, instead.