Okay, yeah this makes sense. However, is it not a different sort of self-sufficiency? Like, theists say that God is a necessary being and describe it in terms of eternity and simplicity and the like. But saying the Universe “just is” seems, in my current understanding, a lot different than saying “God is” because the universe is material and physical. Self-sufficient immaterial whatever (e.g., “god”) seems more logical than self-sufficient universe, because we observe the universe as having causation.
When talking about God as “eternal”, “unchanging”, “immovable”, “spaceless”, “timeless”, “simple”, “loving” etc. (there are many more) you introduce concepts which are not really “simple”

. I have never seen a coherent definition of these terms. Moreover, there are serious problems concerning how these attributes relate to each other. When push comes to shove, the apologists
always retreat to the defense that these terms are imprecise, they are approximations, they do not reflect God’s “true” nature (whatever it is), because our finite minds cannot comprehend the infinite nature of God. My question is: on what grounds do they say that those expressions are approximations of God’s true natrue, if they do not know (and cannot know) what God’s true nature is? Effectively God remains undefined. That is a serious problem with the God hypothesis.
The other problem is that you introduce another level of “unknowns” and “unknowables”. Just
how does an immaterial being interact with the physical? To say that he said “let there be light and there was light” explains nothing. To be precise, since the method of interaction cannot be fathomed, the God concept introduces no explanation at all. So we have an extra “layer” of existence, namely the Universe + God, but the extra layer has no explanatory value.
The atheist’s view is simpler. It assumes no special entities, it is WYSIWYG

(what you see is what you get). The internal structure of the STEM is not simple, but there is no theoretical barrier of our understanding of it. Most probably, eventually we can decipher its workings. At least the track record is encouraging. And in the meantime, the scientific method makes our life better, more enjoyable. It gave us the ability to converse through the internet.
So why do you think that the God hypothesis is “more logical”? It introduces an unknown and unknowable being, and it introduces an unknown and unknowable method of God’s activities (yes, it is “magic”

). What chances do we have understanding God? None. We are finite, God is infinite. What chances do we have understanding the way God “operates”? None. What do we gain positing the God hypothesis in terms of
knowledge? Nothing.
Before anyone mentiones it, believing in God may give you internal peace, which the atheist view does not give. It gives you hope that there is no closure at the time of death. It gives you the belief of eternal happiness. Of course the atheists do not get those “consolation” prices, but they do not even need them. But these beliefs (which are dubious) are irrelevant for the topic of this thread. I only mentioned them to show that there are some “perceived” advantages of being a beliver.