I would take this further: even if we NEVER get those answers (because of some inherent physical limit in our observation and understanding of physical phenomenon, similar to how Heisenberg's uncertainty principle means it's impossible to observe accurately both momentum and position) it still doesn't mean there needs to be "god" introduced in the equation to explain that which is unexplainable.
Once you accept that not everything is knowable, not everything is observable, not everything is explainable and not everything has to have a purpose, and all that is perfectly fine without the existence of a divine being, then why do we need to add a divine being in the mix?
I think the main reason is that if we reach that limit of knowledge, we will always be left with the question, "How did something come from nothing?" I don't know if humans will ever be able to explain that question as it's not something we can experience. That naturally lends itself to the conclusion that there is something greater than us in the universe that can manipulate the physical world we observe in ways we do not understand. Whether that is the colliding of multiverses or divine intervention we wouldn't and couldn't ever know.
Once you accept that not everything is knowable, not everything is observable, not everything is explainable and not everything has to have a purpose, and all that is perfectly fine without the existence of a divine being, then why do we need to add a divine being in the mix?