It's a bit complicated for me.
Gore, as it is, does not really phase me, no matter how brutal or perverse it is portrayed, as long as it remains objectified and distant.
Once if it becomes something the viewer can relate to, like say an innocent young girl, imprisoned in a cage, begging for help as the slowly rotating ceiling, studded with rows of razor sharp spikes, is slowly lowered down, inch by inch . makes me more than a bit uneasy. Now if that example was instead a cruel unrepentant mass murderer and not the innocent, I could justify it as justice or fitting_consequences, but that would still not make me feel any easier.
This would explain the appeal of American slasher films in the 80s for me, since the victims there are usually dumbasses that are just plain too_dumb_to_live, except maybe the One Girl who usually survives. (On a tangent: this is brilliantly subverted in the underrated Cabin In The Woods, where the "scientists" had to result to using mind-altering substances to get their sacrifices to fit their pigeonholed stereotypes whenever the cast behaved like real people. But that's a different topic entirely.)
On non-human gore, I have a higher threshold for them since they're mainly not portrayed as human to begin with (and therefore not relatable), and the fact that in most gore stories the victims are usually portrayed as shitheads that deserve it (making it justifiable, like I've mentioned earlier). Which is why I enjoy the over-the-top gore of works by omanjuuaki or bisexual, while thought-provoking stories by authors like murayu_aki touch a nerve with me, since Murayu doesn't shirk from senseless goretastic violence (remember sanae T_T ).
(On another note, this is the major hurdle I encounter when I write stories: I just can't easily bring myself to inflict death and violence to characters I have spent time developing, even if most of the details are in my head, even when the story demands their swift and brutal demise.
Throwaway characters or those that were build up to be disliked, I have no problems chucking into the nearest incinerator, however.)
(On another tangent: murayu_aki tends to use violence as the climax of their work, like the period at the end of the message they are making in their stories.)
Has there ever been a Jissou that is the yukkuri equivalent of a nicehead? I don't think it exists, and if it did, I've never seen it.