I've seen tons of concerts in my time and somehow survived the 70's. At this point if I go to a concert I am there more for the experience of seeing the group, being out of the house, etc. than I am for the pure sonic pleasure. I am willing to endure the loss of fidelity.
I also had a hiatus of about 15 years since I saw Costello, the Kinks, Graham Parker in the 80's until recent concerts (Shins, Soundtrack of Our Lives, Fountains of Wayne) and I just don't remember prior concerts being that loud! Maybe it's my low grade hearing loss causing pain in an environment that others tolerate without any problem.
But I don't want to expose myself to 3 hrs of high decibels with post concert ringing and worrying about hearing loss. I even heard of a lawyer who sued a group for the loud volume at the concert. He claimed permanent hearing loss after the single event. I don't think he collected anything, but it does show that I'm not the only one concerned.
Bottom line: fidelity sucks, ears still working at current capacity. And I can hear the 15 kHz tones easily from my speakers on a test disc.
bizzo