This question does not arise for people who love art or create art themselves. They draw inspiration, look at the technique, get acquainted with like-minded people, look at portable display stands about future exhibitions of perhaps their favorite artists.
But this question arises for people who are far from art. They think they have nothing to do at a contemporary art exhibition, because they won't understand anything anyway.
But as soon as you get to the exhibition, you literally get into another world. Looking at art, you expand your perception, even if you don't notice it. But after such an exhibition, you will definitely look at ordinary things in everyday life from a different angle. Such exhibitions give inspiration to many people to implement their ideas, and they are not always associated with art.