The reason that clichés become clichés is that they are the hammers and screwdrivers in the toolbox of communication.
"People regurgitate the same old cliches and it becomes like a photocopy of a photocopy of something that's vaguely interesting."
Desmond Glazebrook as Chancellor [of the Bank of England]? He's such a fool. He only ever talks in cliches. He can talk in cliches till the cows come home.
—Jim Hacker, Yes, Prime Minister