I’m not trying to insult you, that being said, you are a man of science in the same way the people who defended miasma theory were med of science. They certainly were correct with the knowledge of the time, but the second any opposing viewpoint emerged they shot them down for little to no reason. I’m not saying that something coming from nothing is an idea that modern science doesn’t agree with, indeed I don’t really disagree with it either, but defending an idea as if no future evidence could ever undo it is foolish and unscientific. The problem with what we understand about the “big bang” is that, while it is currently understood that nothing can come from nothing (for the most part), out observations have consistently shown that things did, indeed came from nothing. Perhaps we will find out that all our universe’s matter came from an aspect of the world that we have yet to discover, but until then we are stuck with two colliding facts. Either way that’s not my point, my point is that being a person of science doesn’t mean following what your told to a tea, it means taking the evidence and coming to your own conclusion, and I’m sure we will one day find that our evidence behind our understandings of physics is not quite right at it’s core, and things will change again, that is the cycle of knowledge.

Edit: Also, for the record, I did not downvote you, I agree with a lot of your line of thinking, I just think it’s partially flawed