This is a very good post and I agree. Office 2011 is quite bad. On my rMBP all my apps launch instantly, but word and excel often take 4-7 bounces (not the best measure) before they launch. It shouldn't be that hard to open blank Document.
As for iWork. I never used Numbers and Keynote extensively, I just found it a mostly pointless skill and a workflow inconvenience. Pages however I used to love. I don't like nor use the new version. The UI seems childish, and so many features were broken. I liked the inspector where I could see ALL my tools, not just the "dynamic" sidebar.
But Pages 09 remains my favorite Word Processor/Layout tool. I once created a graphical review/report thingy for one of my professors with a pages template. He was so impressed that I got bounse credit!
That being said. I now use Office for iPad, and Pages 09 is no longer compatible with iOS. This means that Pages documents I create are stuck on my Mac unless I export them as a PDF. I will probably always have a place for Pages (until OS X drops support), but I am willing to leave it and go to Word as my mainstream word processor
IF Microsoft can create a Windows equivalent. I've used Word, Excel, and Access on Windows 7 and 8.1 through VMWare Fusion and they are a joy to use compared to their Mac counterparts. And iOS compatibility with seamless sync is enough to win me over.