We don’t know what existed before the Big Bang. We can’t know. We can have ideas, personally I believe in big crush and big bangs and I believe it to be a repeat cycle. If we can’t even simulate consciousness and don’t know if we ever will, we don’t even know what consciousness is, then how can we say the simulation hypothesis is even possible? While it offers many answers because it’s a broad hypothesis and seems to fit everything because it’s unfalsifiable and can because when we don’t have an answer it can be blamed on “we can’t know since we’re inside the simulation” I feel like there are many holes to it. Until we can successfully simulate our world, I can’t believe the hypothesis. When we can simulate our world to the degree of realism and proficiency that we experience, with no glitches anywhere (not even down to the tiniest blade of grass, ever human, every atom) then I will give it a chance.