Lets face it, it's the standard.
But not because it's the best. It's not.
Certainly not because it's free. it way overpriced.
It is because it is what everyone uses. In businesses, schools, homes, and it even COMES on many PC's (a stripped down ad serving version).
But that is changing.
KingSoft Word is just as powerful, and free.
Google Docs is closing in... although I am reluctant to type my personal documents on a cloud owned by a company that makes it's money selling anything it knows about me to anyone who asks. Oh yeah, and... free.
AbiWord is like a free Word Lite, and it flies. It is more then many windows users need, and runs on Linux and Mac, too.
LibreOffice Writer is ... well still hideous and awkward, but it has dang near all of the features, and it, too, is free.
Personally, I like KingSoft and run my business with it.
Please, like and support anything else. Maybe Microsoft will start pricing their software more reasonably.