Well, with any music, at any time, you'll find that some will pick a particularly grating sound solely because most normal people don't find it pleasant.
I personally like when they crank the distortion and play fast paced music. But I just don't enjoy the "Scary voice" singing.
Nine Inch Nails is one band that comes to mind, that plays with a grating razor blade sound. Some of the harshest, darkest, morbid, angriest, depressed, music ever put to record. I like extremes, The beatles and their beautiful melodies, to Pantera and Dime's brutal guitar sound.
The lyrics on the downward spiral, should be checked out. Could be the soundtrack to a trip through a depressed, introverted person's pshyche. Seems to sum up some of the mechanization of society and the loss of the "human" element in our lives that drives, i believe some of these serial killers and mall shooters today.
