Books are really fun because your 'voice' is pretty undiluted. There is a very direct connection between yourself and your audience. You will have an editor, but their job is to help you clarify or improve your voice, not change it.
In the world of book writing, an author really gets to have control over what he or she writes, which is why it is very satisfying. With the help of a great compatible editor, you really have something in the end you can call your own.
