From an interview with poet August Kleinzahler:
Recently Poetry posed a question about the social utility of poetry. Does that interest you?
No. I agree with Auden that “poetry makes nothing happen.” Nothing else needs to be said about it.
One more: some argue that the only value of a work of art is the value others derive from it. Do you agree?
I don’t think of such imponderables as “the value of art.” I do think, however, no matter how difficult or opaque the work, the making of art is a profoundly social activity, even if it’s one-on-one with some sort of ideal reader who doesn’t exist.