Earlier quoted context omitted.
That's what my parents said 20 years ago... hasn't died yet
You should try the Go game. It may have some lasting power I haven't seen yet, but its not the normal Pokemon game by any stretch. The core gameplay is actually pretty boring once you've done it for a little while (i.e. once the initial euphoria of catching things wears off).
I have honestly never used an app that has brought me closer together to the people around me. I don't see this being a fad.