Modern day concerts

So, I was at a concert last night and something strange happened.
Mostly, I see bands who are rather unknown or not very mainstream, last night though, I saw Bastille. (UK based band) and the show was sold out.
What struck me most, was not the music, albeit it was really impressive and good, but the need for the many people to film the event. Who on earth will look at those shaky unfocused things again? And people taking pictures, blinded by the light, with the band members being ant-sized.
I really don’t understand people watching a show rather through a screen (phone or even tablet) than seeing it with their own eyes.
This was the first time, I took a photo at a concert. And it wasn’t even of the band. I had no intention to photograph the band. I wanted to capture how today’s audience at concerts look like

modern society is slowly getting too weird for me to understand, or maybe I am just getting old.