Originally Posted by
fireflybob
As regards lifejackets as a passenger I'd still like to have one just in case!
This is also probably the main reason. It gives SLF hope. Bit like the crews of various cold war bomber aircraft (particularly those in the pit below or behind the cockpit). No bang seats like the pilots but parachutes and an escape door - very slim chance of successful use if the aircraft was going down, but at least a slim chance is better than none.