1) Yes, and I really have more important things I should be doing...
2) have been fascinated by the macabre since a small child. Scared myself silly watching Abbott & Costello Meet Frankentstein at age six. Stop laughing, I know it's tame now, but to a 6yo in 1965 it was creepy as hell. Addicted to Dark Shadows (anybody remember the first vampire show on television?) and late night reruns of old Horror classics by age ten. Collected Warren Horror comics and HP Lovecraft paperbacks as a teen (have a Vampirella tat), and read everything I could find on Vlad (The Impaler*) Dracul, Jack the Ripper, Elizabeth Bathory, et al. First read Stoker's Dracula on a family camping vacation. Now write horror fiction. Serial killers are just part of the research
Although, I hate slasher movies. No plot.
Of course back in the sixties and seventies, we had movies like The Corpse Grinders. Great Title, also no plot.
With the RL monsters though, it's the apparent humanity that makes them compelling, isn't it? They look like everybody else, but talk about atypical brain function, oy vey! And guys like Bundy can fake being NT better than I ever could, if I lived to be a hundred. That's what makes 'em scary, that chameleon ability to blend in so well. Never thought of them as role models by any means, but I think maybe on some level I identified with their obvious alienation from the rest of society.
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* talk about the perfect wrestling name for a steel cage death match.