Re: A bit of a false comparison
"You can't really compare OSX as a single entity against multiple versions of Windows - OSX comes in new versions too at reasonably predictable intervals. I know the upgrading of it is a lot nicer, and most Apple users shell out for new versions fairly quickly as (a) they can generally afford to and (b) the upgrades tend to be trouble free and add something worthwhile, even if they are smaller in scope than new major versions of Windows."
You make a good point about the versions, but OSX upgrades have been free for some time now.
And I'm yet to see an upgrade yet that doesn't break some third party app or utility.