PC vs MAC?

9 to 5 Mac is reporting on the newest figures on Mac ownership in the U.S. It says that 12% of households with computers have a Mac,up from 9% in 2008.

But the really interesting factoid is that the overwhelming majority of that 12% of Mac-owning homes also have a Windows machine.
Seems there is very little reason not to be bi-platform. They can share nearly everything you might want to share, from MP3s to Word documents to a printer.

For all their differences, OS X and Windows, are similar enough that moving between them isn’t much more complex than owning a Mazda and a Chevy and driving both!
What do you think?