Are humans hypocrites when acting as if inner beauty is more important than outer beauty?

Evolutionary biology has theories about why beauty is a trait that enhances survival. It also seems to be associated with other traits that make one better able to compete, such as intelligence!

Yet, we all just know we shouldn’t judge a book by it’s cover. We all are taught that beauty is only skin deep, and inner beauty is more important than outer beauty. The evolutionary biologists would say we don’t “know” this at all, but in our society, we’ve agreed to maintain this fiction that we look beyond surface beauty to inner beauty.

Let’s assume the evolutionary biologists are correct. If so, why do we behave like this? Why is it so bad to use looks as an indicator of quality, when, in fact, it IS an indicator of quality? It seems so unfair, I know. It seems so wrong. So what’s going on here? Are we natural hypocrites, or is there something deeper happening?