Adrienne Rich has written about the importance of poetry even in these oh-so-postmodern times.  The Guardian piece navigates nicely between political and "pure" poetry:

Poetry has the capacity to remind us of something we are forbidden to see. A forgotten future: a still uncreated site whose moral architecture is founded not on ownership and dispossession, the subjection of women, outcast and tribe, but on the continuous redefining of freedom - that word now held under house arrest by the rhetoric of the "free" market. This on-going future, written-off over and over, is still within view. All over the world its paths are being rediscovered and reinvented.