If the Unvierse is described by a universal quantum state, then the universe today along with the universe having the identical quantum state billions of years ago, would also be indistinguishable from ours. They would have to be indistinguishable universes as the particles are the indistinguishable. And you would be in that universe also. Nietzsche realized that the Eternal Return had several implications. Lives, your life and mine, are repeated ad infinnitum and thus are meaningless, sensless and absurd.
Progress is an illusion.
What we think we accompllish will be destroyed and rebuilt numerous times. God could not exist, especially the God of the Bible. If He created the universe, then He would be creating the universe over and over and over and would have a meaningless life like ours. This is one of the reasons Nietsche came up with the God is dead statement. There would be no God of love, since God would love us again in a few billion years.