It is no secret that prolonged exposure to loud sound is highly damaging to our hearing. Listening to loud music is one of the common factors leading to degraded hearing ability and tinnitus, and is deeply unhealthy.
At the same time, such level of noise negatively impacts the quality of sound perception, which degrades the musical side of the musical performance.
In what seems to be the echoes of the so-called "loudness war", bands still stick to the idea that "the louder you blast it - the better". But it's not true. There are many other ways to energize the crowd without causing them sound damage, and I'd love to see more of those, instead of them trying to be the loudest ever.
On the alternate I've been to concerts where you just couldn't hear the band playing unless you pressed into everyone at the front. Was a terrible experience and felt like I wasted my money. I'm a big fan of putting in ear plugs, eating an edible and then riding out the vibrations. I agree there must be a good middle ground but I would rather it too loud with ear pro than too quiet.