Hearing. I can communicate through text, I can watch TV with captions, I can have peace and quiet without earplugs/headphones, and a lot noises are obtrusive anyway, so it would be great not to have to deal with them.
Might suck for people around me because I would probably quickly lose the ability to fart silently and go undetected.
The only things I would miss about it are the ability to hear if something is happening outside (prowler at night, someone pulling in my driveway), and the ability to turn off part of my brain by playing well-recognized and well-liked music so that I can focus on some mundane task that I don't want to do (like cleaning the house).
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You don't need to hide, my friend, for I am just like you.