Well I personally don't care for those types of shows or movies, but that is just personal preference. I do feel that if you watch one and then try the stunts yourself..well you need to take the responsibility for the actions.
Sometimes I do wish though movies makers would quit putting ideas in suggestive peoples heads..whenever I see a movie preview showing different and more brutal ways to kill or mame people I shutter knowing or imagining the weirdos out there that are getting ideas....