If the older generation of women is honest about this, they'll admit that they wish they had the courage to do what exactly what millennials are doing now - turn against the stiletto heel. They may be the height of fashion (or at least they used to be), but they've always been uncomfortable and impractical. Choosing a stiletto for a big night out is like asking for someone to come along and twist your ankle for you.
Aside from being impractical, stilettos are expensive - and by now we know how millennials feel about unnecessary expense. The young are generally more casual in their choice of clothing than Boomers and Generation X. If they can go out in sneakers, they'll do it. If they can't, a nice pair of flats will do just fine. Christian Louboutin is making less money, and hospitals are dealing with fewer broken ankles in the early hours of every Saturday and Sunday.