Because, it’s only two damned hours. I’m sure you have the wisdom and maturity to be appropriate with your phone. I’ve curtailed some of my live event attendance because I didn’t spring big money for a ticket just to watch all the fuckwits in front of me, chat, surf, take pictures and whatever else they are doing. It’s crazy making, distracting and inconsiderate. It might not be “rock and roll” as you say but I could completely see any legendary rocker I can think of snatching a cell phone out of someone’s hand and smashing it. Viva la difference I think this ROCKS!!