Probably the most important part of this discussion is the ontological distinction between beings and Being. Science ignores Being, it has no place in the enterprise. But science is not metaphysics. We can have a
scientific metaphysics, one that is compatible with and informed by science, but fundamental metaphysics is a separate mode of inquiry that exists somewhere in between the empirical disciplines and the romantic poets.
It is a degradation of philosophy and metaphysics to reduce them to a "discipline", as if metaphysicians work alongside botanists, astronomers or geologists in the same frame of reference. But it is also a mistake to chalk this up to subjective "feelings" that have no relation to the world, to Being. So on one hand we must establish metaphysics as separate from science, and on the other establish that it is not illegitimate. Metaphysics has historically struggled with an identity because of this ambiguity of Being.
Being is not a thing, it is not an entity or a special kind of being. Beings
have Being (yet it is not a property), they participate
in Being, they come
into Being. It is difficult to explain what Being is, yet we intuitively understand what it means to-be. This is captured in the cosmological question: why something, rather than nothing? And furthermore, in the Levinasian route, we understand the
il y a, the "there-is" without any
thing being. As I noted before, every object could disappear and there would still be this Being.
A scientific explanation of the origins of the cosmos skips over the ontological distinction. There's nothing wrong with this, because it is not in the aim of science to inquire about Being. With science, we are led to theories of extravagant and alien things, processes, events - extraordinarily dense black holes, infinitesimally small "strings", mysterious quantum particles that have mirrors billions of light years away, symmetry breaking, entropic decay, etc. However,
all of these already have Being and so are inappropriate to answer the question of Being. Metaphysics aims to find what makes it the case that these things
are rather than not, beyond the causality that science describes.
Metaphysics is not looking for
causes, but onto-theology obscures this in its search for the Ultimate Cause.
There's not 100% something in the metaphysical universe; there's some something, and some nothing. I hope that makes some sense; if not, let me know. — Noble Dust
This sounds Platonic. The things that exist participate in Being insofar as they instantiate aspects of the perfect Ideas, but these things are not in themselves perfect.
What I am thinking however is that nothingness implies somethingness. To say "nothing exists" is a malformed proposition, an incoherent idea, for the fact is that if nothing existed, then this includes the fact or proposition that nothing exists. "Nothing exists" is a performative contradiction. And "something exists" tells us something substantial that is not captured by science. It is not about whether a frog exists, or a star exists, it is about whether or not something exists
tout court and what it means for this thing to exist, regardless of what this thing actually is. Its
identity is irrelevant: all beings, despite empirical differences, nevertheless equally participate in Being such that we can say they exist without having to make any additions.