As a writer whose stories are coded in the snuff category, I want to say that I understand and sympathise with people who dislike reading extremely violent stories in which women are brutally attacked and killed. I feel the same way.
So why are my stories coded as snuff? My subject matter deals with stronger female fantasies, usually consensual or at least semi-consensual, where the outcome is often the death of a female character in the story. I don't feel that my writing is on the same planet as the more objectionable variety, but all the same, I want to give readers some warning, and snuff is the only code this site has available for that purpose.
I do object to the suggestion that 'snuff' material is necessarily badly written. Good writing exists in every category on this site, including 'snuff'. There is also a lot of stuff in that category that will not be to everyone's taste.
I also have codes that I avoid, such as 'scat' which instantly turns me off.
The reason for having a personal dislike for a particular story is not always a question of degree, but one of attitude or philosophy. I don't get on with stuff about abusing women, especially where a woman is abused for the selfish gratification of the abuser. The abuse does not have to involve mutilation or death for me to find it objectionable. I don't complain about it. I just avoid it, and I also avoid threads in the Forum that deal with things I don't like.
What I am interested in happens to be stuff that women like, and it is a fact that many women enjoy violent fantasies. Many prefer them non-consensual but consensual, submissive fantasies that emphasise the female perspective are far more interesting to me, psychologically.
Removing that kind of fantasy material entirely would remove stuff that is enjoyed by many people of both sexes. It is important to understand that these stories are fiction. They come from the imagination of the author, but cannot be assumed to represent the behaviour of the author in everyday life.
People enjoy these stories for the same kind of reasons that they like to watch horror movies, or go on scary rides in theme parks.