I can only speak for myself...

Crazy: check smile

Lost hearing sensitivity: sadly, at 39, check- I dont hear much above 15khz. I have a disc of test tones and I tried playing them and once above 15khz- I really didnt hear much.

Best regards,
Jerry
Main System: 861v6, DSP8000s in corners, DSP7000s Center and Sides, 1-9 humans.