You are correct. The Big Bang theory is here to stay. The evidence supporting it will not go away even if a new discovery requires it to be modified to accommodate the new finding. The theory is definitely correct in the main. It would not have been possible to predict the cosmic microwave background or the relative amount of the constituents of the primeval nebulae if the theory were not at least mostly correct.
Why would we ever ditch a theory that unifies observation and makes detailed and specific predictions accurately? What incentive do we have to do that?
The creationists want us to do the same with evolutionary theory, which also unifies observations, has successfully predicted what kinds of things can and cannot be found in nature, has explanatory power, and has been successfully applied to practical matters that resulted in improving the human condition. They poke and prod at it, citing what hasn't been explained or found yet, and how they just can't see how it is possible to people that can't see how it's impossible, in the apparent hope that man will abandon the theory for a supernaturalistic claim that does none of those things.
Sorry, but that would be irrational. The reason and evidence based thinker has a different epistemology from that of the faith based thinker. We come to our beliefs using different methods, and not surprisingly, they yield contradictory positions. As I explained earlier, the criterion for truth in the rational, skeptical, and empirical is based on the ability of an idea to accurately predict or beneficially modify outcomes. That is, truth is inferred from evidence properly evaluated and confirmed by the generated conclusion's utility.
The criterion for truth in faith based epistemologies appears to be nothing more than the will to believe and declare an idea true independent of evidence, or despite contradictory evidence. By that method, I can declare anything true as you have been doing regarding the nature of angels.By that method, I can make any statement at all that I want to about angels and declare it true.
You can see why empiricists are not interested in the objections of faith based thinkers. The process generating such objections is flawed.