It probably varies from person to person but I could see such things having the opposite effect on certain psyches. Drawing, writing or otherwise creating horrors could be cathartic for some people as a way to deal with inner turmoil. Much in the same way musicians turn their pain into top hits, think Eric Clapton's Tears in Heaven, Alanis Morissette's You Outta Know, Red Hot Chili Peppers Under the Bridge and pretty much the entire album Face Value from Phil Collins.
