As Alva Noë elegantly put it, “The value of art is precisely that it gives us the opportunity to catch ourselves in the act.”
Art is similar to sport in this context. There is no real world consequence of whether an athlete gets to their destination - winning is an "institutional fact", not a "brute fact". The entire point is to see how someone gets there within their own human limitations. It’s an exhibition of humanity. This is why many athletes refer to their sport as an art. It's also why we are not interested in watching computers play chess.
Novak Djokovic is, by the numbers, the greatest tennis player of all time, but he has still never managed to be as beloved as Borg, Federer, or Nadal. The most beloved athletes of all time tend to not have just been those that achieved the most by the numbers, but those that displayed the greatest sportsmanship, elegance, and style in their process. We are, and always will be, enamoured with the bare human endeavour.
If poetry was, for example, only about a destination - meant to simply execute an idea or deliver a piece of information, then it would no longer be poetry. One’s vocabulary is about more than information density; it’s about the qualitative “shape” of an idea.
All art is like this. The very process is what makes it what it is.