Can understand exactly what you mean. We are obviously depraved (and I'm not taking the P....), they are of the gendre that you either can take them, or not, and they do take a certain type of mind.
Would never slate anyone for not being able to do so. I get the heebies about anything to do with eyes...ie: operations, cuts to them, won't go into details, but that is beyond it for me!
One of the things I like about these movies: I watch and then I enjoy the special features, showing the scenes being made, how they were constructed, etc...that's as interesting as the movie.
Bizarre as it sounRAB: if there was an equivalent movie but with such things being done to animals.... I couldn't watch that.