[AndrewN @ Dec 16th 2007 12:43PM]

Firstly, the two-fingered right click is disable by default, so most first time users won't know that it's possible to do, especially if their only experience is messing around with a MacBook at a store. The same is true for the Mighty Mouse. Secondly, it is not impossible to "right click", or otherwise open the right click's context sensitive menu without actually right clicking. Since the days of the one button mouse, Ctrl + Click has achieved the same affect. Thirdly, clicking and holding on a dock icon will summon the docklet without pressing control or using two fingers.

While it's highly unlikely that using a PC laptop keyboard in favor of a MacBook will give you carpel tunnel, there are some reasons why the MacBook might feel more comfortable. While the key pitch is not the same on the MacBook as it is on a full keyboard, the spacing around the keys puts them roughly in the location they should be. Contrast that with a PC laptop keyboard where the keys are flush with one another and are a smaller pitch, resulting in the keys not being where your fingers expect them to be. Not life changing, but it can be uncomfortable.