Jipperty
I mean what is it exactly about planes that requires CC to look after our safety.
I expect you will get a number of answers to this question, but I'll just give you one example. In my career, I've investigated two accidents on trains, both of them involved passengers who (late in the evening) decided to get off the train at the most convenient location for them, but which unfortunately wasn't a location at which the train was stopping. This didn't do either of them a lot of good, since these were high speed trains. However, it didn't impact too much on the other passengers. If someone tried the same stunt on an airliner, I'd be very grateful to have trained cabin crew available to prevent it.