Rock bands should be loud. It's not supposed to be mellow. If they play in a bigger arena the sound has to carry to the back. So, if you are way up front it's going to be really loud. Those seats are mostly coveted for that very reason, those people want to get the full affect. I do agree that if it's so loud in the back it hurts your ears, then it is too loud. On live music in general, worse/better? Live music is the true reality of that moment. If it sounds bad that's because in reality it sounded bad that performance that day. If you have a recording of a poor sounding performance it should sound the same, bad, on your stereo if you want it to sound real. Certainly for rock music, most recordings are compressed. You actually get the true dynamics of the music live. Some people don't like that. What i hate live is when the sound engineer doesn't know what he/she is doing and the vocals are too low/high or the guitar is too low/high etc. A good sound engineer can make it sound good for people in the center anyway, even if you are in a poor acoustical environment. A bad one can make it sound bad everywhere in any venue. That's what sound checks are for. Unfortunately some musicians don't know what good live sound is either.