Reaver- I never said theists were immune to metaphysical criticisms. Positing the universe came from nothing, or that the universe was actuated by a deity are equally metaphysical claims, because they make reference to osmething has no knowledge of- what preceded the universe.
Secondly, God is not complex, He is totally, simple, you're confusing power for complexity. It's a long argument to explain, so I really don't want to have to get into it, but I'll have to if you continue to object to it.
That improbabiltiy refers to the universe coming out of nothing by chance. A deity isn't acting on chance, it's atcing on design. It's highly improbable that I roll 10 6s in a row, because that is chance, but I don't see how it's improbable that I intentionally just place the die down with the 6 facing up ten times in a row, that's not improbable, because that is by deisgn, or intention, not by chance.
But again, the improbabiltiy by chance argument isn't necessary to logically sustain theism, that's not why people are theists. the question pertains to philosophy of religion, there are metaphysical issues, it's not a scientific debate, because science is only concerned with what can be observed within time and space.
That's the thing, knowing how the universe came to be as being only a metaphysical question might not be the case. There could very well be discoveries or observations made that give clues or understandings to how a universe is started, and from what it came from. So, I guess, the idea of what is metaphysical and what is not is hard to say until it is actually knowable by observation and evidence, especially when it comes to cosmology.
Either way, having no evidence or determination of a deity than there not being one, it seems to be an unfounded faith-based position to claim there is, as adding agents and concepts to an already speculative field would only make it even more speculative and unlikely.
I am unconvinced that you can just say "god is simple", yet also hold the idea that it is this being that plans out everything, made everything, and has a particular goal for it (from what I can recall on your previous posts on this topic), as not being a complex being or supposition. I would very much like to see what argument you have for it, as I've never really heard a whole one on that particular subject before.
Once again, our conceptions of what "nothing" is (or whatever there "is" outside of the universe as we know it) makes the whole argument spurious. We don't know anything about the inevitability, the frequency, or the nature of universes' starting (or what exactly a "universe" entails being, as it could simply be the unraveling of different dimensions, or what ever it might be). Evolution and natural selection is a perfect example of a system that operates without a designer or creator, that overtime can build complex systems, so one does not necessarily need to invoke one just because something seems complex.
It could also something like rolling six die, and finding it improbable to get all sixes on every one, but maybe it's a scenario where you have to roll those die a billion times. Inevitably, you will end up with all sixes numerous amounts of times. Maybe a similar thing could be true for universes?
Also, to employ such ideas as "design" and "intention" outside of anything that could remotely represent space and time as we know it seems a bias of our cognitive functions, and not something that should be assumed as intrinsic to the nature of things.
Anyway, I stand by my previously made argument that all our knowledge and assertions only function within empirically gained and formulated notions anyway.