The goals of criticism

I believe that the goals of an essay that written in a critical structure are to not to necessarily "tear someone a new one," but more or less to seriously analyze everything about something. A critical essay should take every element of something and discuss its significance the item as a whole. However, a critical essay should decide between what is "good" and what is "bad." Although, it should do this is in a way that is fair the item being judged. Judging, that is ultimately what the essay should achieve, some kind of judgement of the object being discussed. Since the other, monumental and antiquarian, either preserve or praise the task at hand, critical should judge and analyze.