Both the utilitarian and the intrinsic arguments ignore the growing evidence that logic arguments, of which both utilitarian and intrinsic – though a little less for the intrinsic camp – use, aren’t the kinds of arguments that are the most persuasive. Emotional appeals work best, in part, because the content of the argument is often secondary to the emotion it elicits, and often that depends on how the argument is delivered. Click here for some quotes on why emotion works better than logic in certain kinds of arguments.