There is no doubt that sustained listening at high volumes causes hearing loss. Headphones can damage nerve endings as well. The simple truth is: Too much volume is no good for your health.
I have been fortunate to keep my "space" all these years on stage so I was never exposed to the front line of fire from the speakers. This is another resason why monitors are SO very important. You needa comfort zone at all times on stage.

Many of my friends have lost some sensitivity, mostly in the upper ranges first. That makes spoken work harder to distinguish, and music sounds "dull" because of the lack of high frequencies. They tend to compensate by cranking the treble and pushing the fadars up .....mor DAMAGE.

Get your hearing checked and STAY out of the way of the speakers. It should be an easy choice really .......
to HEAR or not to HEAR ...
What was the question?