If you want to get a good idea of the best way materialists have to deal with the otherwise nihilistic implications of their philosophical system, take a look at this clip from the movie “Rabbit Hole“.
I find it interesting how the boy makes the assertion that the notion of parallel universes are 1. infinite and 2. well evidenced by science. The truth is that 1. parallel universes are not infinite (as a matter of logical deduction) and 2. have absolutely no evidence for them whatsoever.
I’ve studied this theory for quite a while now. Ever since 5th grade in fact. And while stories like Quantum Leap and Number of the Beast may be wildly entertaining, the fact is that they simply don’t hold water scientifically (for a number of logical and philosophical reasons) and they ultimately provide no hope for anyone searching for real answers worth staking your life on.
Additionally, here is a documentary which attempts to breathe spiritual life into the otherwise dead philosophy of materialism. If you listen closely you will be able to pick up on the distinct fingerprints of post modernism. In order to add any weight to an otherwise vacuous theory, it is wholly necessary to wage an all-out epistemological assault on the mind. If we call into question what we know and how certain we can be of what we know, then we can sneak in a theory like parallel universes which has no real evidence to speak of.
However they do raise a very valid point about the question of where our knowledge really lies. I would argue, along the lines of Alvin Plantinga, that without God, the ability to reason and trust our thoughts is clear evidence of a personal creator.