@baddox, my fingers' comfort level when looking up a contact and phoning them on my Nokia 3100's is indistinguishable from my ambient comfort level. Why should switching to a smartphone provide any useful data?

Sidenote: the question for any new technology should always be "Why not?" Not "Why???".

For this particular anecdotal case, I am not claiming I have the answer, but please consider trying it before raising an indefensible argument. I have tried a bunch of keyboards and layouts. Surely my derivations are fallible, but empirically, they should carry more weight than a "keyboard enthusiast" who has not even tried a different keyboard layout or any of the well-known ergonomic keyboards.