I also think this is a very interesting / important aspect of nature, since physics have never proven anything to be solid and quantum physics stumbled upon natural laws that seem to point to a reality that essentially is a hologram or illusion. We use to think that the brain was responsible for the hallucination of reality or illusion but we now understand that the brain is simply a part of the hallucination, we cold be anything, what is it really that which is hallucinating the reality in which we have a brain? Logically the hallucination must come first, and contain the brain, which is backed up by quantum physics where observation comes prior to the observer, since the observer is the observation of something, but what!
If there where a wast universe in existence, the odds of life spawning( if it can ) on many places is high, and some might have started such an simulation, in which we exists. The problem with simulation theory is that any proof of its non existence could be simulated, and so could proof of its existence, making it impossible to prove or disprove, sadly.
As for god / creator, yes, nothing exists without reason or creator that is fundamentally impossible. Physics blame "nothing" but cant mentally grasp this nothing. The brightest minds in physics talks about nothing containing quantum rules and fluctuations... How is that nothing? That is indeed something, where did it come form, why did it spawn us to as that question? There is no rationality behind saying nothing created everything, there is no nothing, by definition. In case of simulation we have creators obviously, god not so much i guess, but our creators might
I do believe that we expect our reality and it is such as we expect if there is a way the probability waves can collapse into that expectation. We are conditioned to see reality in a certain way and we expect it to be like that every time when we wake up, so it is. This is done by our brain, but what observes our brain? I think that pure consciousness is observing everything and that we simply got lost in a illusion where we do everything to survive, which prevents us from realizing we cant die, we are eternal and we are the creator of this world.
The next question is who created our higher consciousness and that would be god I guess
a concept we mentally cant grasp, a source of truth and altruism waiting for us to, by free will to return to him/her, through altruism!
Peace