Poll: When was the last time you had an official hearing test?
Through research, a majority of the population listens to music at a decibel level that leads to temperary or permanent hearing loss. I find it strange how people worry about and prevent losing the rest of there 4 basic senses, but neglect hearing protection and precaution.
Outside of a hospital, you can not go anywhere without someone blaring music at unsafe levels. From personal experience it seems to be correlated around the Rap/hip-hop, Rock/metal, and electronic music genre listening crowd.