Editing pages is one of the final steps to perfecting a piece of literature. You could go in to a final draft having simple mistakes that shoudlve been taken care of in one of the first revisions. Having simple mistakes causes you to lose credibility as a writer. And this could really hurt your rep. You want all your works to be as perfect as they possibly can so that they look good for you and your readers. YOur readers wouldnt want to read some random gibberish that  doesnt make sense even though thats how most of my papers are lol.