Same here. I use Windows 7 at work because it's my only option. When the Mac mini was first released, I picked one up to give it a try and soon after, my home became Windows-free. I know it's cliche to say it "just works," and it's also one of the points that gets repeatedly made fun of, but that's been exactly my experience. I've been a Mac OS X user for almost 7 years now and I don't know a whole heck of a lot about it other than how to use it because I don't NEED to.
It would be silly to say I've never had any problems, of course I have. But they've always been either easy to resolve with a quick Google search or they've been resolved shortly after discovery by an update from Apple. At this point, I can't ever see a time in which I'll go back to Windows.