A. NOPE
B. HAYLE NO!!!
As long as I can listen to my discman, get my 6 pretzels in a bag, and read a book, I am fine. The flight cuts down travel time by an astronomical amount. It's nice to be somewhere and know that the phone will not ring at all.
Now if the plane is going down in a 9/11 type of deal, I'm turning my phone on to call my mother and brother.

Otherwise I do not need it. Can you imagine the roaming rates, if they even still charge for that?