Correct. At a minimum, they are there to provide protection "from aggression, theft, breach of contract, and fraud" [http://en.wikipedia.org/wiki/ Minarchism]. That is indisputable to any sane person.<quoted text>
No one here has stated that government is necessary to provide morality or ethics.
All of the rest of the services that Government offers is up for fair discussion. As a progressive, I happen to think there is more they can offer. Libertarians, naturally, feel differently.