Lots of angst about the coming of artificial intelligence and autonomous cars and CRISPR. Even more angst about our addiction to cellphones and social media. I was a late-comer to smart phones, but have somewhat caught up and now understand the addiction.
But I'm not agonizing about it. Seems to me generally people overdo in reaction to any social change, whether it's the coming of railroads, crack, or smart phones. Once people see the downsides, they create new norms which have the effect of damping the adverse impact. Remember the crack epidemic of the 1980's? Or the concerns over mass media of the 1950's (i.e., comic books, etc.)?
So my prediction is we'll see the same thing happening with social media and smart phones. I may not live to see it, but it will happen.