It makes them feel young again. When I was sixteen men in business suits & briefcases would try to chat me up on the bus. My reply in a loud voice was "what would your wife think of this & am I nearly the same age as your daughter. Everyone on the bus would go quiet & stare. He would blush & change seats.
Because they are easy to use and abuse there not smart there wanting one thing they think there going to get but the adult is using them they are predictors they make the teen think that they are loved and liked and than they take what they want and use them they use the week in society and stay clear of the strong