Turning Away From Linux And Back To The Dark Side?

Slowping asks: "A friend of mine posed me a good question that I think would be best asked on Slashdot: Of all the people who have used Linux or any Unix variant, how many have gone back to Microsoft Windows? I'm not talking about newbies that install it and never run it. I'm talking about people who actually learn the new OS, and can use it competently, but for some reason decide to go back to Windows. If you are one of these people, why did you switch back?" I've always thought that Unix can be configured into an OS for everyone (especially FreeBSD and Linux who are coming out of the server closets in big ways). However, we Aren't Quite There Yet. Where do Unix variants need to improve before they can serve as general desktop machines?