Maybe I’m out of the loop. Are they bots? People just meme-ing? Perverse shut-ins? Mentally ill persons? It seems like even the most horrible posts (such as one involving the death of the image subject) will have numerous comments to the effect of “Oh, I wish it was me!”… and the most impossible and fantastic depictions have comments that claim or imply experience in a matter-of-fact way.
You do know what rule34 means?
Rule 34 : If it exists there is porn of it.
What exists? Death, torture, rape, and there are boat loads of people that are into that too
Either way, it’s a fetish, it’s pretty normal, and no, these people are not mentally ill because they like something you haven’t seen before.