So I also never watch "slasher" movies/TV, or read books that depict graphic violence/gore.
I'm not squeamish, I have raised, slaughtered, and dressed livestock since I was a teen. That's never been a source of "fun" for me though. It has a real life purpose and the end result has always been a much improved source of food for my family and I.
I seldom watch anything on TV that has any violence at all and to be honest I'm a bit leery of those who go out of their way, like to a movie theater, to see it. I'm 62 and this something I've done since a was a teen.
I just don't want those images in my memory. I've never looked into it but my gut feeling is they desensitize us. Looking at the current state of the obsession with owning arms designed specifically to murder humans compared to when I was growing up, I think there is ample proof of that.