I disagree with your argument. Although it is true that government provides police forces, ambulances, and firetrucks; these services could still exist without government. The only difference is that without government, these would be ran privately and thus funded privately. I another disagreement I have with you argument is that you state a developed economy is a benefit of living under a government. There are many governments that do not have developed economies; for example, much of Africa and South America. Next, sanitation and sewer systems would still exist without government so long as there is a large enough demand for it. Same goes for education: private schools would still exist, probably even cheaper than how it is now given there is a large enough demand for it.