No just some people reformat needlessly it sounds like, too many people think of reformatting as a magical cure. Windows really is pretty good about maintenance as long as you arnt doing stupid things (downloading spyware, or alleged registry cleaners or best of all, "your computer clock may be wrong" garbage).
I know you're going to either talk about Linux or Mac OSX being superior but that's all opinion. IMO OSX is like a picture with a frame on it, you can look at it but can't really change it. Linux is the exact opposite but lacks compatability, plus it's overly difficult for most users (I like linux, but most apps are windows only).