I use Microsoft Word, but just a word of caution that if you're working from a trial version (ie bought a new computer etc.) the program will lock down your work and make the work inaccessable until you pay for the full version once the trial runs out. I learned this the hard way and lost access to a 6,400 word essay.
I use Crimson Editor and Notepad++ for programming, Open Office for short articles intended for use on the web, and MS Word for working on my book. I used to rely on Open Office for almost everything, but my publisher's templates work a lot better in MS Word, so I ended up re-installing it.
That goes well beyond SUCK. Leave it to M$oft to figure out the best and most interesting ways to screw people.
I use Word for all of my writing, the newest version - still getting to the grips with the 'new' interface but getting there slowly.
I use MS Word cause I'm comfortable using it and I'm used to using it. Though many don't like the 2007 version, I find it cool and improved. I love the interface and I think it's more user-friendly. Just be patient and you'll get used to it in no time. Notepad also works for me. I like the simplicity, and I just realized I'm beginning to like Courier font.
undoubtedly MS word is the undisputed leader as far as word processing programs are concerned, the most developed and evolved is MS word only
I usually use notepad or gedit/ medit. If I am at home, I use gedit, but when I am in my office, I use notepad. Flexible