Yes I have used it and every version of Word since 6.0.  The things I dislike about Word are that Microsoft seems to have thrown in everything except the kitchen sink.  The interface is simply too cluttered and it can be really difficult to find what you want. Microsoft mentioned some time back that the 10 most often requested "new features" in Word had been there for the last 3 releases.  The problem has been that few people can find them.

As to bugs, these routinely occur with updates.  Something that worked previously just refuses to work in the latest update.  I also find that Word loves to do its own thing and in spite of telling it I want UK English and A4 page setup it routinely defaults to US English and US letter.  Word seems to have trouble with grammar and has a pathological dislike of the passive voice.

I much prefer the uncluttered intuitive approach of Nisus Writer Pro and Scrivener which have been my main word processing tools for the last few years.

Virginia Heffernan wrote of Word in the New York Times:

"Microsoft Word. Light of my mind, fire of my frustration. My sin, my soul. Mi-cro-soft-word. The mouth contorts with anti-poetry. My. Crow. Soft. Word.  Oh, Word. For 20 years, you have supported and tyrannized me. You have given me a skimpy Etch A Sketch on which to compose, a cramped spot on the sentence-assembly line — and then harangued me with orders to save or reformat as you stall and splutter and assert points of ludicrous corporate chauvinism (“Invalid product key”! “Unrecognized database format”!).

And just when I need to be alone with my thoughts and my Mac, you detain me by emphasizing my utter dependence on you, melodramatically “recovering” documents lost in your recreational crashes."

Extremely well said.