That is your wake up call. I have a medical condition called "deaf as a post." Hearing loss *is* cumulative. The early onset of tinnitus is a red flag saying what you are doing is too loud for too long. It caused *some* hearing damage. If you keep it up, the tinnitus never goes away. Trust me on this.. your hearing will continue to degrade over time, too. Wear hearing protection on a bike. Always. It's not the mechanical or exhaust, it's the roar of wind that does it.
Years of industrial noise, motorcycles, airplanes, loud music, shooting, have done it for me. The good news is my latest pair of hearing aides are awesome. They bluetooth to my phone, TV, etc. I can actually hear again, and don't have to nod and smile a lot.. As good a "normal" hearing? No. Make that Hell no.
Ok, off the soapbox.