I'm a huge enthusiast of mouse and other input devices, UIs, and I've tried the Magic Mouse, as well as gaming grade mouse devices like the Logitech G9. Here's

I'm a huge enthusiast of mouse and other input devices, UIs, and I've tried the Magic Mouse, as well as gaming grade mouse devices like the Logitech G9. Here's the thing. The Magic Mouse excels at some key areas, but it's vastly inferior in some others. Overall, it ends up being worse for certain types of uses (long term, high performance). Here's the breakdown of the Magic Mouse for various mousing tasks: Vertical Scrolling - the Magic Mouse is hands down way better than G9 or any other mouse. Horizontal Scrolling - Magic Mouse wins here even harder than at vertical scrolling. This is definitely one of its highlights. Pointer tracking - it's not as good as a gaming grade laser mouse, but it's good enough. This isn't the part that makes people hate it. Gestures - pretty good, but not as amazing as the Magic Trackpad. Better than normal mouse that have none, but "decent gesture support" is not necessary better than "no gesture support", because it should be great to be usable. Left clicking - okay. Right clicking - not so great. You have to physically lift your left finger so it doesn't touch the mouse surface in order to right click. This is okay to do once every 5-10 minutes, but more often than your hand will get tired really fast. Now, here's the part that absolutely kills the mouse and the main reason why so many people dislike it, IMO. Switching between various modes - performs really poorly compared to, e.g., Logitech G9 or pretty much any other standard mouse. Here's a worst case benchmark that showcases the weakness here: imagine you need to, in rapid succession, do a left click, right click, scroll a fixed amount, repeat. Try doing that as fast as you can on for 90 seconds on a Magic Mouse. Your hand will be extremely tired, because each of the 3 modes of operation are best performed using different hand positions. On the other hand, with a mouse like G9, your hand position is almost identical for all 3 tasks. So alternating between them is effortless in comparison. So the bottom-line is: the magic mouse excels at some key areas (which makes some people love it), but fails really hard at some other (less noticeable to the average user) key areas and becomes really tiring to use at high performance for longer periods of time (which makes people hate it). It's an example of Apple failing to build a "great _all around_" experience that they usually succeed at (see MacBook Pro Retina, iPhone hardware, etc.).