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I'll go to my Talmud class. This is silly. Computers are just tools, and the one rule for tools is: the right one for the job. I can't put an Oracle 11g instance on a Mac, so it doesn't matter how cheap a Mac is. Similarly, if I had a need to draw pictures of some sort, the Mac is the obvious choice.
Otherwise, the interface difference is like the choice between a stick and an automatic. Finally, the fact that the Mac is prettier is like choosing a car based on its color.