I totally agree with you babe!
Haven't been at concert for years now but the phenomena you're mention is because we people unfortunately live through the lense of our cameras now more than ever, I guess. We have to document every single thing on our phones and share it with all our friends and followers.. This is so sad, because as you mention life is here and now, enjoy it for Gods (or our own?) sake!
RE: To all the people filming at concerts! A little rant...