If you are a premier edition user, Google Docs allows you to keep document fidelity.
Writing in that context ‘but you don’t really have to use Word’ without actually answering the relevant question is wildly off topic and irrelevant and only true for a, I would guess, rather small subset of people.
If you feel truly and honestly feel that you need to use a piece of software to appease a group of people, you have some deep seated issues with creativity. Of course I use the word you in reference to people who feel this way and not to anyone in the thread directly.
Oh, and while I am more than willing to agree with you that Word sucks I have no qualms using and liking other software which ultimately doesn’t give me text files. I absolutely adore InDesign and see no reason why I shouldn’t.