Windows 7 now has a Dock, like OS X, so you put your frequently used programs there. My only bad experience with Windows 7 was with my wife's PC, and I think that's largely because it was an ancient chip (P4).
The reason I brought up the IT department here on campus is because they teach operating system design, and by and at large Microsoft and Apple are pretty much on the right track, design wise. Sure the registry was a mistake, but not a fatal one. How many windows users see a BSOD nowadays? The guru is my friend and companion in AmigaOS, and he makes frequent visits. I don't consider myself having properly played with one of my Amigas if the guru doesn't show up at least once.
There is no blanket dissatisfaction in the Windows world, even Vista, which was a mistake, still left Mac with only 8% of the US market and a far smaller percentage here. There's no rush to Linux, AROS or Haiku, even though they run on industry standard platforms.
The Amiga is single user, without adequate security, without memory protection, without broad hardware support. The Gui looks almost cartoon like compared to modern GUIs.
There is no application for the Amiga like MS Office, Photoshop, Premiere, Final Cut, or InDesign or even a decent email client (yes I still use an email client). The version of Lightwave for the Amiga is so old you can't do more than 1/3 of the stuff you can on a modern version.
And that's it, you buy a computer to run programs, if it doesn't have any programs then what's the point?