Perhaps the paramount problem for Christians and the many worlds interpretation of quantum mechanics (or even the multiverse simpliciter) is Christological and anthropological in nature. There seems to be a very real aspect of our subjectively experienced day-to-day living—faith and hope. Hope is faith or trust predicated to the future. The problem should become evermore present in that Christian doctrine teaches that faith in the efficacy of Jesus’ atonement is a sufficient and necessary condition for salvation.
MIT physicist Max Tegmark talks about hope in the sense that it’s illusory. He gives the illustration of the birth of his son. He sat there in the hospital hoping that nothing would go wrong and he realized that this was foolish. The idea of hope is a ruse foisted upon us by our subjective human experience. Tegmark goes on to say,