Many comments here address an important issue: the human mind has a hard time making sense of both an eternally existing universe, as well as something-from-not

Many comments here address an important issue: the human mind has a hard time making sense of both an eternally existing universe, as well as something-from-nothing. But most of the issues stem from presupposing physicalism. It's understood even by staunch physicalists that choosing this metaphysics is ultimately arbitrary[1]. There's another way to approach all this. Start by asking: what's the one thing I know for certain? It's hard to say any more than it certainly seems like something is happening. Investigate this sheer fact of "seeming." See what the seeming is like before you apply any metaphysics on top of it. What happens when you do this extremely precisely? Suppose that the correct metaphysics is that you are ultimately the primordial ground of being, that (paradoxically) weaves itself into apparent realities. What we think of as physical reality is just one instance. It transcends parameters like time and causality, but can give rise to them of its own will. Being the primordial ground of being, nothing logically prevents you from knowing this ultimate truth directly and unequivocally (unlike if you were really just a human). As it so happens, the preceding paragraph describes how you would (re)arrive at this knowing. Or at least, that's what's suggested by various mystical traditions. As far as I can tell, there's definitely something to it. [1] "There is no way to distinguish between the scenarios by collecting new data. What we’re left with is our choice of prior credences. We’re allowed to pick priors however we want. [...] We have every right to give high credence to views of the world that are productive and fruitful." —Sean Carroll, The Big Picture (p.91)