-Reason 1: if you leave your data scrambled and in different directions, that can cause your story to flip.
-Reason 2: organization can help sepporate your info and data to help you get a visualize story in hand.
-Reason 3: organization can make your writing look and read clearer.
-Reason 4: organization is a key elemnt in like a said make your writing look proffesional and details.
-Reason 5: It brings a good introduction, thesis statement, etc in order.
hope this helps and have a good day! (:
