Zarathustra wrote:
So I suppose that existence always was. Existence is some sort of necessary state which transcends any particular instance of being, even the universe itself. Time and space may have exploded into Being at the Big Bang, but existence itself couldn't have started then.
And that's where my mind starts to short-circuit. That's when this atheist starts to think that there is such a thing as Holy, even if there is no God.
Dammit, you have to stop saying things like that, cuz it makes me wonder why we disagree on anything at all, and if we don't it ruins half my fun.

My default answer to this kind of thing [more a balancing point] is that we don't really [yet] understand either "something" or "nothing"
OTOH, if approached carefully, your conclusion illustrates the frame of the science/religion conflict and the mess it makes. [I think I'm about to rave/rant/spew/expound].
Many peeps have many views on what makes humans different. I think, as I've said elsewhere probably, it's the extravagant extra capacity and plasticity, emergent/synergistic/non-algorhithmic/non-determinate quality of our brain functions. I've posted lots of ways this reveals itself other places so won't repeat now/here...but the end is they lead to a brain of spare capacity for analogy/metaphor, and that leads to the potential for asking "why?" This matters cuz it is qualitatively different from what/when/where/how...problems that we're better at, quantitatively, than the lesser minds, but not essentially different from in kind compared to those minds. But what happens? Our emotional part is webbed with our rational part...our why is bicameral, is both an emotional and rational question at many levels. Dolphins are sad when a mate/offspring dies...but as far as we know they don't ask why existentially, why did my child die? They feel the pain/longing/emptiness, but not the question. Only we do, so far. In a perfect universe we'd have learned all we have the capacity to know about what/when/where/how [the science questions] and THEN begun asking why? Because AFAICT religions are at war with science and each other simply, purely, at root, from the beginning, because we insist on knowing and proclaiming true answers of why irrationally, non-rationally, a-rationally, in the face of/in conflict with the material circumstance, without knowing the answers to the only foundations that can, even potentially, lead us there. And it wasn't, originally, a matter of "fault." To be social, we have to be caring. If we care, we must ask "why did x happen?" while we wail at the loss...yet the answer to most of those questions is in what/how/when/where...if there IS a why, our human understanding of it is deeply hidden in and limited by those if it exists at all. If we'd evolved reasonably, we'd have just accepted that shit happens [sympathetically/empathically, not necessarily coldly] until the point where we understood all the causes of the shit and its happening.
Every 5 year old asks why the sky is blue. But at that age they're really asking for what/how/when/where, and are literally incapable of understanding even those in most cases. That's us. Faith/religion in the general, esoteric, comforting, mystic, hoping, longing, accepting, etc., way is one thing. Religion with the answers, the rules, the judgement, the killing, the sinning, is something else entirely.
At which point I return to my previous statement...we cannot, have not, probably will not rule out god[s] or holiness. But we have, and can, and for God's sake [and our own] must rule out particular GodBeing descriptions...because they have, and will, and in extreme cases MUST kill us in the name of truth while being unalterably false.