Long time Mac detractor John C. Dvorak [Dvorak.org] posted the above linked column about his experience using an iMac for the first time. And he had an interesting perspective.
Ultimately he holds a similar view to myself. It’s a computer. In the end all of them do basically the same thing. I prefer the work flow of MacOS but I find many things to like about Windows. And I am anxious to try my hand at Linux. But seriously try any of them and they will all basically do the same thing. Find the one that you like best and fits into your computing philosophy. Then enjoy!