Oops. I'm ten years behind
Just occurred to me that I typically still use Office 2003 by choice. I'm way behind now. I try Open Office and now LibreOffice from time to time and LibreOffice is the suite I install by default.
I must be in a minority but I have used Office 2007 and Office 2010 and found them so uninspiring I have not even tried 2013.
Microsoft must be doing OK with most users still, but they have alienated me to the point where I am just transitioning to open source now.
Come to think of it, maybe I'm ten years ahead?