This is a subjective and philosophical question with no real objective answer. Some would speculate that the very existence of the horror genre appeals to the human need to be frightened, however safely. The fact that horror movies have gotten more and more graphic over the years suggests that for some people, horror is like a drug that won't satisfy them unless the dose is continually increased. Many people argue that there is simply no justification for portraying certain acts onscreen and that such films only exist to titillate the sick needs of a subsection of society. Others, such as director Srđan Spasojević, claim that depicting horrific acts can serve as a metaphor for a social order that is horrific and hypocritical at its very core.