@edgarblythe,
You are making my point Edgar. You are opposed to what you see as "religion". If you define atheism as "lack of belief in a deity", the opposition to religion is not part of that.
You have already agreed that each society makes its beliefs on "whatever works" (your words not mine). That doesn't mean that your beliefs about metaphysics and morality are any better than the shaman's beliefs. That is my point. Every society has needed some belief system on which to build our common beliefs about morality and meaning. Our society is no different.
You and I (since we are part of the same culture) share beliefs that humans have intrinsic rights, and that equality and freedom are high moral values. You and I both want society to conform to these values. Like the Shaman, our beliefs about morality and metaphysics are based on "whatever works" within our society context.
How are you and I any different than the shaman?