Its the same for me. Its always been there. I've also done a lot of activities over my life that make it worse, like playing the drums, attending very loud electronic music parties, and motorcycling without earplugs. It's just a low-level background sound that is part of my life, and I'm lucky enough to be able to tune it out most times. But reading this post and going through this thread has made it a lot worse.

Interestingly, my five-year-old was complaining about ringing in her ears being distracting at bed time, so I wonder if it is genetic too.