Ah well - it's all academic to me - my flying days are over for the foreseeable future.
Given the propensity for airlines to lose and delay luggage, the risks of getting stranded at airports, the way that bags are hurled about, and the tendency for baggage handlers to rifle through them, there is absolutely no way that I would fly without hand luggage containing a washbag and change of clothes, and there is absolutely no way that I will consign delicate and valuable electronic items like laptop/CD player/phone/camera etc to my hold luggage.
Nor am I confident that I can rely on the flight attendants to provide me with enough water to keep me adequately hydrated during the flight, so I want to take a bottle of water on board.
I wonder who the first poor souls will be who are stranded at the airport on their return because their bags containing their car keys have gone astray.