It's absolutely driving me nuts. Makes no sense.
Nowadays it seems perfectly reasonable to imagine clicking and dragging the image around in order to pan -- I'm not confident that particular interaction would have even occurred to a lot of people a few years ago, though.
For example, I still like to scroll down to go down in a web page, and get confused (and frustrated?) when I use the new mac mice which use the touch-screen/map type scrolling. However I'm quite sure that if I was a mac person, I'd get used to it fairly quickly.