I think this is very much a matter of personal preference. To me, the "Magic Mouse" is the best pointing device I have ever used on a computer, and was actually my original reason for switching to Macs. I do understand that many people see it different, of course.
I worked with an engineer who didn't like Macs. I don't prefer the "Magic Mouse" however I bought it when it first came out and showed it to him. Not long after that I saw him using the mouse and he used it for years. He absolutely loved it.