A few years ago I almost lost the hearing in my left ear. The gory details are best omitted, but I was left with (what the doctors claimed) was 20-30% hearing and only two thirds of the bones I should. For all intents and purposes I was deaf in that ear, a lopsided and mono world where car alarms didn't exist (a boon at 3am) but wearing headphones was painful.
Two years and two operations on I have most of my hearing back. All of this is just context for me to say: my hearing is precious to me and I am precious about it. It is a cliché to say that you don't know what you've got until you've lost it, but when it's personal it really brings it home.