Considering the number of shoe designers that are men...lol.
I wasn't even talking about dom ordering sub to wear heels situation...but rather a social convention and mating game rules. Girls are taught to wear heels, (not unlike they are taught to wear skirts).
And while some (most?) guys don't care most of the time, they do prefer women to wear heels and we aim to please, lol. And there is also a large number of guys who bluntly say that they cant stand to see women in flats or tennis shoes, so that leaves...heels.