On the one hand, I tend to agree with warpedhand above that were I invulnerable, I would rarely bother with shoes.
On the other hand, I want to make a joke about how PG made a deal with the devil, trading her shoes for... I'm not sure what exactly. To keep her bust from sagging?
(you see, her boobs are Aunt May, and sagging is dying, and her shoes are MJ, and the devil is... Well, the devil. Right. Overexplaining again.)
Disclaimer: It just sort of struck me as a funny analogy; this is in no way intended to deride you nor what you find relatable and/or entertaining. Offense is not intended, and if it is taken, I preemptively apologize.
Disclaimer of disclaimer: I may be being overly cautious of my (attempted) humor being misconstrued. I apologize for that too.