text: Teenagers don't like it when they are told what to do. It's a rebellious stage of life when they think they can do whatever pleases them. So naturally if someone tells them that they absolutely must do something, they automatically think no way. If they have an attitude like this it will ruin the experience and they won't get the good feeling people do when you serve others. They might dislike it so much that they don't even do service when they're grown up. They resent people that tell them they have to do something, and then they are ornery towards everyone else afterwards.