Similar to revisions, edits carve away excess verbiage so what remains are your best thoughts. Edits ensure that your argument's sound, your thoughts are cohesive and your eager readers understand you. Without it, they get tripped up by errors in punctuation or grammar. Great editing protects you against libel, too, and meets guidelines set in-house or by the AP, APA, MLA or Chicago Manual of Style.
FLAUNT YOUR STYLE.