cliches are are all around, because they express basic (sensible) facts in simple wording. If the poet uses a simple wording construction, then theses cliches will be very useful. complex wording scheme doesn't allow cliches easily. as a matter of fact, as being soft spot(s), they may hurt the poem
in teen age literature cliches like: "I love you," "you broke my heart," etc, don't seem as cliches, but for the well established writers, a change of wording scheme would be quite necessary to match the complexity of his/her wording style.