I believe in the long run portability and weight will factor in. I have a messenger bag built to hold an iPad and even with only that my shoulder feels it after carrying it for a period of time. Not as much as hauling the MBP around of course but noticeable.
Bigger screen does have it's uses but Apple would not have gone to the smaller one if they didn't see the market going that way.
Bigger screen does have it's uses but Apple would not have gone to the smaller one if they didn't see the market going that way.