Gregory's ServerI think it also can genuinely be used as a tool for self development. This doesnt have to depend on it being literally true. There are enough moving parts that move at different speeds thats its easy to map important parts of wisdom tradition onto. Theres a big slow moving thing that comes around every three decades of your life that is explained as something to take opportunity to reflect on big themes and remap. Small things come by and theme your introspection for a week or a month.
This general pattern may not be as optimized for you personally as true believers claim, but it doesn't have to be. Spiritual development and wisdom traditions work on big near universal themes and let you fill in the details. Pick up any ancient religious text and you discover generally humanity is struggling with the same things.
Science doesn't offer something similar because its assumptions and its measurements used to prove its theories are incredibly specific.