I have been using Thinkpads for years and been using Trackpoints. I love the technology, but we getting a bit of strain in my fingers, so wanted to try something else, so using a laptop with a touchpad instead. Finding that I kept clicking things by mistake. Thought there was something wrong with my laptop, but then found there was a setting for clicking things my mistake and it was called "Tap to click" and a similar one for right clicking. Both were on by default.
I guess I am one of those that prefers to click when I want to click and not have a slight touch of the touchpad register as a click. The touchpad has to differentiate between clicking, scrolling, moving, etc., so having everything with the same level of pressure seems likely to lead to mistakes.
