Have you used one for more than a minute or two? You'd be surprised how quickly you adapt to it; it's just another muscle-memory thing. When I'm using a more traditional two-button mouse, I find it quaint that it has actual physical buttons, and that the scroll button/wheel is only two directional.
I support macs, and use mighty mice frequently and involuntarily. I have adapted to lifting up the my left finger when right clicking. The ergonomics of these mice is horrible. Not only is there the issue with the "buttons," but the whole mouse is not shaped for a human hand and the track ball is too small. A mouse should be usable first, and beautiful second. Almost all of the problems with macintosh UI can be traced to not understanding this. Blaming the user for not being fashionable enough is not the correct approach. Fixing the mouse design is.
Love may laugh at locksmiths, but he has a profound respect for money bags. -- Sidney Paternoster, "The Folly of the Wise"
