Hi, new member here!
I think it comes down to the right tool for the job and your own preferred way of working. A word processor is designed to prepare a document -- it lacks features to help you organise your research, manage the novel's timeline, manage the status of rewrites, manage character profiles, etc. Crucially, I also find that word processors often lack a tactile "creative surface".
Personally, I am a big fan of
StoryMill, which, in basic terms, is a hybrid of a word processor, database, project management tool, research assistant, and note taker.
My favourite features are:
* Distraction free full-screen writing surface, which has a blue background with white text (much easier on the eyes during a long session). Also, working full-screen keeps you away from emailing, random web surfing, and other procrastination!
* Chapter/scene management with easy drag and drop re-ordering. The progress of chapters can be tracked too; e.g. "first draft", "needs work", "not started", etc.
* Character management allowing you to create a very easy to control database of your novel's characters.
* Location management... same as for characters.
* Timeline, with drag and drop scenes, key events, etc.
* Productivity tools... as well as tracking the status of chapters, you can set a word count goal for the novel (say 80,000) and a goal for each writing session. I set my session goal at 500, so I see a nice progress bar filling up as I type and I get a sound effect when I hit my goal. It gives me a sense progress and allows me to realistically track novel progress.
* Easy export to Word for preparation of the actual manuscript.
* Tracks submissions to agents and publishers.
Of course, I should say that great novels were obviously written without computers and professional writing software. I am a technophile and StoryMill works very well for me. I don't have a fixed place where I can always work and surround myself with my notes, research, and inspirato; me and my Macbook end up in very random places!
Hope that was helpful!
Cheers,
Ian