Yea it's very hard for me to hear those sounds too. Probably not to the degree that you described though! My girlfriend loves those Autonomous Sensory Meridian Response videos, ASMR for short, where people eat really crunchy pickles and whisper into a super sensitive microphone. It kind of weirds me out!
Really?? Omg these videos would be my nightmare!! I didn't even know they exist :P
Apparently lots of people are really into hearing other people crunch pickles and other weird eating sounds lol!
This is what sounds more like a disorder to me haha