I wish Apple could invest in fixing hearing (biologically) for all people fix hearing problems so no one who doesn't want to be deaf have hearing-loss can hear! Hearing related issues sucks.
The interest for music and hi-fi I had isn't on the same level anymore since I got trouble = less money will be invested into these things. I think to maximize the appreciation for music (and not to say the sounds of nature during all of life we need to keep people's ears in shape also when we get older. And keep a healthy listening habits when we're young:
Life is loud. It's also fun! Hearing Health Foundation wants us to listen responsibly, so we can hear all the things we love for life.
hearinghealthfoundation.org
Sorry I digress but it's really important stuff!