Why do some airlines noet people who are tall and very overweight sit in extra legroom seats?

I don't know, but honestly, if there was an emergency, would you be able to handle the door, and the pengers if there was a panic?? I'm just being honest. I recently lost 120 pounds, so I totally know where you are coming from, but you also need to think about the other pengers safety as well and the side of the stewardesses.