How often do you get a document that has even cosmetic issues when opened in OpenOffice?

That's my point.
I haven't had any trouble using Linux for the past 9 months straight without having to boot into Windows for anything. Kubuntu is admittedly the first distro that I have used that has kept me from running back to MS.
I have been using *nix systems for a lot of things since the mid-late 90s. I remember the early versions were a nightmare for desktop use. Linux has come a long way since those times.
The only lacking area is gaming. Open source gaming doesn't have to mean "no profit". People will donate to keep good, free games going. I am sick of the video game developer's attitude about sales. Most of their games get pirated anyway. Gem and marble games will get Linux onto more desktops than a prettier taskbar will. And you can quote me on that.
The Linux programmers are awesome. They do what they do out of a desire to make knowledge available to everyone. They have written some of the best code known, but there are some horribly crappy games and "amusements" out there.
Look how far Microsoft made it with solitaire. That's the only thing most people use their MS Windows machines for.