When they make movies they pick and choose. They only pick the behaviors that make a good story. It's just a shame if people really believe in it... in a way it is weird because no one believes lab workers act like cops too (like in CSI) or that profilers work as cops too (like in Criminal minds).

As for kids acting emo, I wonder if it's not a result of how restrictive things have become. We allow kids to show less and less emotion and it has to always be positive. We cut 75 % of their emotions away rendering them useless and ugly. In a way I see it as a rebellion trying to claim their emotions back. They might overshoot the target, but it often happens with reactions in society. I wish we could tell kids that all emotions are valid and it is OK to feel sad sometimes.