A bit of thread drift and not a dig at GD.
Noisy environments and hearing loss have been known about for some time now and whilst people may claim that the environment was the route cause of their hearing loss, many did nothing to mitigate the loss.
Quite often I've seen people not bother with hearing protection and when challenged, I've been told that they don't like wearing ear plugs...
Hearing is far too precious to take a chance and just because it might seem okay today, it doesn't mean it is going to be fine in the years to come.
You've got to take care.