I have tinnitis too, a very very high pitch ring.
When I was growing up, I only heard it if I have a fever or had been given aspirin.
In my early 20s it began to ring all the time and has never stopped but one time for a little while. I had been given a medication for something and I woke up in the middle of the first night to silence. It had been so long since there had been real silence, that I checked my own pulse to see if I was dead. LOL! It was back when I woke up again.
I never listened to loud music or the such, but as a child, if something like a balloon popped, I thought it hurt my ears, so I never wanted to be around ballons.
Through the years, it has slowly gotten louder and louder. I can somewhat ignore it most of the times, but once in a while it gets so loud I can't. If it's at night, I get my Alexa to play pink noise to help my mind have something else to focus on.
I thought one day "they" would find a cure. I hoped.
I like your tinnitis haiku. I wish I didn't understand it.
It's interesting how it seems to have different triggers for different people. It's never stopped for me. Sometimes I kind of think it's stopped, but as soon as the surrounding noise goes away, no, it's still there. Oh well.