CityK said:
...the user/GUI interface could have been developed more intuatively with say something like an "action" click (aka right click) and "function" click (aka left click)....
Well, there's the "old" Macintosh approach, where there's only button and you have to use some combination of Apple Command key, Control key, and/or Shift key -- all of this with a symmetrical mouse that equally offends leftys and rightys.
Back in those halcyon days of the early GUI, MS actually had it right with the 2-button mouse (versus Jobs repeated insistence that more than one button was unneeded). When the GUI finally came to UNIX (OpenLook, Motif), it required a friggin' 3-button mouse. The cat was out of the bag by then; the world had gone mouse-button crazy. Since then, I've seen mouses with up to 10 or 12 buttons and maybe 4 wheels.
I believe that the 2-button mouse (with at least one wheel) is still the most efficient pointing device for us 5-fingered humans.
...Being a righty this really doesn't affect me, but I will note that when my brother (a southpaw) comes over and plays games on my computer, he tends to have some difficulty with the mouse (which is not a good one for southy's to begin with - Logitech Mouseman) and usually ends up with a sore wrist...
If you have a lefty mouse AND a righty mouse, you simply plug both into USB ports. A lefty mouse and a righty mouse will be wired the same on the inside, where the Index Finger Button on each mouse sends the same command down the wire. With true lefty and righty mouses, you won't need to fiddle with the mouse button control panel settings (i.e. -- reversing the button assignments).