Mindwipe said:
Nothing is sacred. All will be consumed.
Well it is up to the artist in question to make the presentation palatable to the audience. A good artist could theoretically make any experience have such an artistic impact that the work of art redeems itself. Although there is this one director I kind of wish would go to jail... Pierre Morel.
Violence (and not sadism and masochism... I mean violence that is very specifically meant to injure and kill the other party) and ye' old mc fetish don't seem to mix well. Granted there are one or two authors who have done it well on mc stories. And I love my action movies but there are four problems.
If it is violence directed at a sex slave, then you are abusing a human being; which I don't particularly like. If it is directed at an outside party, then the pool of fetish fodder gets smaller, due to incapacitation, injury and death. And if is directed at a person as a part of an induction, it makes you wonder how effective the mental aspects are if they need to hurt someone to get compliance.
Finally, it creates environmental problems, mainly violent people and violent means. Depending on the context, violent people are either very easy to mind control, or practically impossible. And if the environment contains weapons, why not use them? I don't find the consequence to be sexy, but justifying that to characters and readers requires thought.
The exceptions to this kind of prove the rule, because there is a realistic professional or psychological reason that those things happened in the stories. The characters are psychotic or have a criminal background that motivates the violence impulse. If it adds something to a story, it is generally not directly sexual in nature.