I actually disagree. It's all about ergonomics. Holding your hand/wrist up to the screen all day is unnatural and tiring - not to mention smudgey and annoying.

I actually disagree. It's all about ergonomics. Holding your hand/wrist up to the screen all day is unnatural and tiring - not to mention smudgey and annoying. The large trackpad being planar with the keyboard allows you to use without physical stress for extended periods of time. Their position is if you want to fing on something, fing on an iPad. If you want to type, point and gesture, get a MacBook. I'm very ok with that and personally satisfied that Apple didn't jump on that bandwagon.