Quote - "But why should I care whether the colour is processed correctly?

If it appears correct, what has its actual correctness got to do with anything?"

So, when you take your camera outside and take a picture on a bright day with indoor flash settings, I guess that doesn't matter either?

No, you're right. It doesn't matter.

Not if you get the effect you want, no. It does not matter.

And if you screw up and forget to adjust your white balance, (and I bet every digital photographer has at some point) and do not get the effect you want, it's trivial, trivial to fix after the fact.

Digital photographs are GC'd and almost all of them are trash. None of them is a perfectly accurate reflection of reality.

I shoot multiple exposures to merge into HDRI's. When I process them into PNG's, who knows what combination of gamma, luminance, saturation, light/dark point settings I'm going to use for any given image. Which of the many possibilities is correct?

And should I be hanged for shooting in monotone?