I always disliked MS for the way they killed small innovative companies early on, and gave away free versions of what the others did.
But then I do admire their Office products and I have always been a Windows man.
XP and 7 are great (love those bread crumb trails and the Windows key + left and right arrow1)
But I cant see a need to go to Windows 8 as I do all of my work on a desktop.
I can't see desktops or Windows going away for a LONG time.
Sure many people will just buy a tablet or a smart phone.
And of course as Windows and Office are now "mature" products there is very little that can be added to them.
And its Firefox for me.