How come the pipes shake and make noise when I flush the toilet??
Do what you like as life is too short to bash yourself for something that makes you feel comfortable. As long as you are not hurting someone else do whatever floats your boat. I think your doctor is right that this fetish is innocuous and that it is merely a symptom of something else that is causing you psychological unrest.
The fire alarm will not make a permanent damage to hearing but it is irritating. Better take up the matter with responsible persons to attend the fault with the alarm. May be the smoke from your car engine or from kitchen may be the reason for faulty operation.Find out the reason.
