I just think about all those people in the airport lounges, talking just for the sake of talking and having those stupid conversations...'Hi, so what are you doing, oh yeah I'm just sitting here waiting to board...blah blah' and they annoy the hell out of me!!
Imagine if that was ocurring for an 8 hour flight? Wow would that be annoying. >:(I think the same thing about using mobiles on the Tube.
I also agree, that its nice to not have anyone talking on mobiles for awhile--nice break!