The disappointing truth is that bananas are quarks, and by amazing good fortune, the properties of everyday macroscopic objects are sufficiently related to those of other physical phenomena that a few lucky humans can just barely manage to crudely adapt their banana-counting brain hardware to work in those other domains.

Amazing good fortune implies amazing coincidence, which implies strong disconfirmation relative to any alternatives that don't need such a coincidence.

Philosophy of math is hard, and I'm not sure we can get very far trying to figure it out on LW.