Should the government of a free society be permitted to do more than just protect rights?

If the proper purpose of government is to protect individual rights, why shouldn't a government of a free society do other, additional things as long as it does them without violating anyone's rights? If courts, police, and military could be publicly financed without the use of force, couldn't roads and schools? Is there some reason besides reliance on taxation why these sorts of government programs are bad?