Maybe the enjoyment some people derive from these stories is the thrill of being on edge
That's why they call it "fiction", isn't it? The ability to express through written form any and all emotions coursing through the writer's head is one feature of posting. Few, if any, would ever contemplate actually acting out their fictious designs. I

t's sort of like taking other work literally. These same types pattern their very lives from what they see on TV/movies, read in stories, etc.

If snuff is to be incorporated in fiction here, or anywhere else for that matter, clear disclaimers should preface each story to avoid such misunderstanding by the too gullible. The writer can then produce whatever for mature consumption, knowing well that neither he nor she, nor the reader, intend on actually believing what is never meant to actually see the light of day.