christep,
I can't understand why you fail to acknowledge that if someone tries to board an aircraft who is not authorised, it is a matter of security. Are you seriously suggesting we as cabin crew aren't concerned about security? Believe it or not, security and safety are the two things we spend the majority of our time training for, talking about and while as passengers you don't see most of it, it is also what we spend the majority of our time on... There are many people on no-fly lists who, for one reason or another, are not allowed to fly. So, whether it's a stow-away trying to hitch a free ride, or a suicide bomber with a backpack.... either you have a valid boarding pass, or the appropriate authorisation to board, or you're not coming on. I think the majority of the flying public would want that we check you're permitted to board the aircraft and therefore the majority are happy to comply... there's only a few 'holier than thou' such as yourself who seem to think they are above it all... so why not teach us something else now?