I figure that if the CAA and the FAA can conduct studies into this (and they do) and from those make it a requirement that mobiles are switched off during the flight then that is a good enough reason in my book!
And anyway, flying is the only time when you can get away from the bloody things! "HI. I'M IN THE PLANE. HOLD ON WE'RE JUST GOING THROUGH A THUNDERSTORM! I SA.. W..'RE.. J.S. GOI.. TH..UG. A.. brrrrrrrrrrrrrr"
Bad news is that BAe Systems are developing a system whereby an airliner will have an aerial system in the cabin and you'll all be able to use your own mobiles on a "roaming" agreement with the provider. I can't think of anything worse than sitting next to someone on the phone for the entire flight - it's bad enough you have to share one armrest and (well, practically) one seat - never mind a conversation too!