I'm not disputing the learning curve, though I happen to agree with swise that it's easier to go Windows->Mac than the other way. My basic problem is with the underlying assumption that a personal computer has to run Windows or it's not a "regular" computer. It's the same dominant-majority mindset one finds in lots of other places: religion or ethnic background in many countries or parts of the U.S., sexual orientation, politics in my heavily Democratic area ... you name it. Most of us are in at least one minority and are very sensitive to the majority mindset in that situation, but we tend to forget it when we're on the other side. Operating systems are less of a life issue (no matter how emotional bigots in favor of any OS can get) than some of the others, but it's still the same human tendency to subconsciously marginalize small minorities.