Is there an actual positive use case to teenagers using instagram? It seems overall very similar to smoking. It is bad for you; there are strong network effect

Is there an actual positive use case to teenagers using instagram? It seems overall very similar to smoking. It is bad for you; there are strong network effects, as in teenagers get peer pressure to do it if everyone else is doing it; it is difficult to get them to stop once they start; it is difficult to prevent them from starting.