People are always attacking Apple for the lack of a two button mouse. There are two reasons for a single button mouse that make me think they weren't all that bad an idea.
The first one I heard not to long ago possibly from a slashdot link maybe somewhere else. Its a design constraint to prevent an insane number of context menus on a right mouse click. Ever notice why lots of applications on the mac have very similar functionality in terms of where to click and what keyboard shortcuts do what? I admit I use a multi-button mouse on my work machines but when I right click there is always just a few very useful things as opposed to my windows box where a right click brings up a universe of choices!
Now in my mind it seems a bit extreme to limit programmers through hardware restrictions (basically fewer two button mice equals design for the bigger audience).
The second reason I have I never bought until I had children. I always thought it was silly to give kids a one button mouse. They are going to need to learn how to use two buttons eventually right! Well when I sit down with my 3 1/2 year old to play on some educational website he can do everything by himself on my mac with a one button mouse. On my pc with the 4 button + wheel mouse he keeps hitting the wrong one. He is a lot happier on the mac.
I expect the two button mouse from apple to be "unique" in some way. Probably ambidexterous with some other "never been done" feature. So mostly style over subtance with something weird that will make people go hmmm. That's their market now though, I would expect nothing less.
To be honest I think the other reason they are finally doing this is that their Pro App line of software really does need multiple mice buttons. Its just too annoying to use FinalCut Pro with one mouse buton. They looked awfully silly selling computers to folks who then have to go out and buy another mouse to use the software they bought to use it. I wouldn't be surprised to see the mouse bundled with FC Pro pro or the production studio if its not made a selectable option on the Apple Store.
The amazing part is they are going to charge $60 for a two button mouse and people will buy it.
