High heels are part the toolkit with which women compete for mates, they’re off limits/sacred. A woman who opts out of high heels pays a price in competition with women who don’t.
The handicap principle is a hypothesis originally proposed in 1975 by Israeli biologist Amotz Zahavi to explain how evolution may lead to “honest” or reliable signaling between animals which have an obvious motivation to bluff or deceive each other.
The handicap principle suggests that reliable signals must be costly to the signaler, costing the signaler something that could not be afforded by an individual with less of a particular trait.
For example, in the case of sexual selection, the theory suggests that animals of greater biological fitness signal this status through handicapping behaviour or morphology that effectively lowers this quality.
The central idea is that sexually selected traits function like conspicuous consumption, signalling the ability to afford to squander a resource. Receivers know that the signal indicates quality because inferior quality signallers cannot afford to produce such wastefully extravagant signals.Wikipedia
Boys sometimes handicap themselves in order to show off to girls. They ride bicycles with no hands, they get drunk and take risks and they engage in costly displays of public generosity. The handicap principle suggests that public charitable donations will often be made by men.
Ladies also adopt cultural handicaps. They wear high-heeled shoes, crush their waists using corsets, bind their feet, conceal their faces and mutilate themselves.