Don't assume that because T.S. Eliot wrote without rhyme, a poem that rhymes is not good. Don't take your perfectly-well structured narrative poem and break it up into lines of three or four words just because that's the way William Carlos Williams would have written it. Don't cuss and relay long stories of vulgar sex practises just because that's how Alan Ginsberg writes. Replace Cliches with fresh, new images or metaphors. This stands true for just about any kind of writing.
Cliche is bad in writing for a number of reasons.
First of all it is uninteresting. Secondly, most cliches are outdated and people aren't always sure what they originally stood for. Cliches can confuse writing, so don't use them. Another reason to avoid cliche is the problem of connotation. Most cliches start out as idioms which are peculiar to a particular culture.