How often do you crop?

Nahhh, just that some imagine one thing or one way and others are different.

That is certainly true for me; but I see no reason that other people who claim otherwise shouldn't do it the way they do.  Different styles, different needs, but oddly enough the same good results too.

Some people shoot one specific photograph.   You are right about they don't imagine there would be any other photograph than the one they previsualise.

But some are different. I see a particular previsualized image in many cases (much as described by Ansel Adams).

I also shoot a huge volume of experimental exposures much in the light of how Garry Winogrand described it:   "I photograph to see what the world looks like in photographs."  Only later, when editing, does the stage where a specific photograph with a particular framing allow cropping to be artistically even possible.

And we should note that for all Ansel Adams talked about previsualizing, he also was emphatic that the negative is the score, while each print is a different performance and should be expected to be as different as the person's imagination that makes it.

Actually, it's part of what every photographer, good or bad, does by necessity.  Cameras cannot capture the entire scene, and we all at a minimum crop with the camera.  We often move closer or farther and we often change focal lengths to change the composition of what we choose to frame.  That is cropping too.

My own style is often to crop as loosely as possible with the camera, and include anything that might be useful in an image under any imaginable circumstance.  Then when I'm editing for a print I choose which parts will be include in this particular print, and crop out those that aren't.  What is included changes when the purpose of the print changes.

Well, I searched with Google and couldn't find anyone famous saying that.  But I agree except that "composition" should be changed to the word "framing".  We change framing when we crop.  The organization of what is framed is composition.