This thread immediately makes me think of how my wife occasionally wears shoes that she admits are entirely uncomfortable, and make her feet sweat and eventually swell if worn too long...why? for the usual suspect reason: fashion. Me personally, I decided long ago that I would never wear anything that didn't serve at least it's basic purpose admirably... shoes, pants, shirts, coats, undergarments, you name it, if it doesn't satisfy it's primary function then it's useless in my opinion.
On a side note, a good friend of mine in college use to ALWAYS wear his shoes...
even when he slept. The only caveat being when he showered, and then he brought them with him into the bathroom. His reason, "if I need to bug out and run like hell for whatever reason, I'm prepared". Hard to argue with that logic