Yeah, I tried going to a Cowboy Mouth concert at the Georgia Theater once. Everyone I was with seemed to enjoy it, but I found it a terrible, painful experience. I eventually figured out that if I just stood outside\ on the street, I could hear just fine. Indeed, I found the doors filtered out a lot of the low-delay echo (insufficiently loud) and distortion noise (too high-pitched), actually improving the sound quality.

I'm told there's supposed to be an uplifting feeling of unity at rock concerts. I think instead that most people are just insane.