Nicola Thorp was recently sent home without pay for refusing to wear heels. Sexism in the workplace is only the first problem with this footwear.
Standing up is no small feat. Bipedalism is one of the qualities that helped humans climb the food chain. Yet, observing the hunched habits of smart phone addicts, we may return to quadrupedalism soon enough. Evolution does not take our well-being into consideration.
The fault is ours. As Daniel Lieberman argues, cultural evolution often affects our genome more than biological evolution.