You mess up your concert experience. You just stare through the screen the whole time. To this day it is still a great experience to enjoy the concert with your own eyes without paying attention to films and battery status. You will NEVER forget intense moments in your life. You don't need videos. I don't have a video where I saw Axl live for the first time or no video where I just witness the premiered Slither with Axl on vocals, for me a little piece of music history. Still, I remember it very, very well. I can still hear Axl singing with a top voice for ACDC. His rasp went straight into my body. It really vibrated. No video in the world can trigger such a feeling. You don't miss anything thanks to your brain. Even the first stages of dementia can't destroy these memories.