I have given up using Word for writing books. I may have given up on it for writing articles too. I have decided to move over to Scrivener instead.
First, Scrivener is a purpose-built application for writers, unlike Word, which is a general, all-purpose, word processor. That in itself would not be enough to make me want to change, but it was certainly enough to make me sit up and pay attention.
more here - 5 reasons for using Scrivener for writing books