I'm pretty sure there are acute illnesses that don't involve gushing blood. And sometimes your only recourse is the emergency room because the doctor's office is closed, the urgent care clinics only want to treat strep throat, yeast and bladder infections and won't prescribe any pain killer stronger than baby aspirin.
The NY Times has chronicled many explanations for high bills that have nothing to do with overuse of services. Like every person with a pulse in the ER bills their services separately, even if they don't do a damn thing. I badly mangled (and ultimately need to amputate) my left ring finger and I had a $1300 bill from the ER physician whose only "service" was to ask me if I did it on purpose.
And God forbid you should need surgery and the surgeon brings in his "out of network" business partner to consult in the surgery and you get hit with an uncovered four or five figure bill from them, too. I honestly think they overcharge on purpose so that both the "negotiated balance" is nothing to sneeze at for an hour of "work" (I'd like $5k/hr, too) AND they can write off the unpaid portion of the bill as a tax loss, too, cutting their gross income.
All of this is just bullshit designed to run up fees as high as possible. Which I guess was all part of the grand game when comprehensive insurance actually was, but now that it's not it's just so crystal clear how it's nothing more than a money grab.