God, the afterlife, and free will are all shit we just made up. The first one was an early guess at the origins of the universe, the second came out of the fear of death, and the third sprang up in response to determinism; basically once people realized that the universe followed consistent rules, someone went, "Wait, what about our minds?" And the room got quiet.
People like to talk about these ideas as though they exist in some pure, natural form, but they don't. They were invented by a person, and he was probably wrong.