Which begs a question from me which I never understood the answer to: why are people in such a great big hurry to get on the plane to begin with? I understand first class because the seats are nicer and you begin to enjoy some of the perks. But in coach, why rush to get to your seat? I assume some may rush because they're afraid someone may get their seat. You have the FA there that will take care of that. If double booked on the same seat, you might actually get bumped to first class (heard that mentioned on here before). Might not find a place to put your luggage? Check your luggage rather than carrying it on, or ask the FA to help you stow it if there is no room right over your seat. In short, I don't think theres any rational reason for coach passengers to hurry to get on the plane.
Likewise, what's the big hurry to get off the plane once the fasten seat belts sign is turned off? I don't fly much which may explain some of my being less than knowledgable, but every single time I fly everyone is stampeding to get on and then back off the plane. I would rather everyone just take it easy. You'll get on your plane before the thing takes off, and you'll get off after it lands.