I agree with booo - I remember having two infants, hand luggage and trying to get on, get straight and get sat down out of your way! Forget your jealousy of us getting a head start and remember that if we are to board in the middle of everyone else, it's possibly you that's going to have to stand backed up in those horrible hot glass walkways waiting to board. So it's not just to help us, it's to help everyone else just as much. I still try it on when they call passengers with small children and they are nearly 11!!!
Agreed on the wheelchair users - of course there are those who need one but take a mental note of them as they wheel through Dalaman then look for them at the baggage reclaim, standing then pulling their suitcase off the carousel with ease - it's a miracle!