Okay, so I'm learning some QFT, I read through Bogoliubov, Shirkov Introduction to Quantized Fields up to the section on renormalization, and then wanted to see a more modern point of view- so I started a-googling and now I'm coming to understand a bit more about gauge theories and what exactly the Standard Model is.
ANYWAY- I'm still a bit troubled and confused about the basis of the whole theory. So many physically 'real' phenomena arise out of pure formalisms involved with perturbation, such as the actual interactions mediated by gauge bosons which, in a way, are just pieces of terms in a perturbative expansion- correct? They're also, conveniently and beautifully, artifacts emerging from the structure of gauge formalism.
Now, I do quite love this abstract nonsense, but isn't this fundamentally different from the physical reality arising in other branches of physics? In GR, another (gauge?) field theory, the stance on reality is quite different.
That is- How does one place QFT's reality in context with that of other areas of physics?
EDIT- By 'reality' I mean those phenomena exhibited by the formalisms that are to be considered physical, as opposed to unphysical. For example, again in GR there is a consensus that some regions of Schwarzschild are not 'real', so we concern ourselves with the dynamics of the other regions. Trying to weed through QFT with this sort of logic seems very difficult.