Horror movies, games, and books are just some terrifying experiences people perpetually come back to. The desire to get scared and obtain an adrenaline rush is something people enjoy, typically only when they have some level of control over the fear causing factor. There is an explicit difference between the fear that is desired by people is different from the fear invoked without a form of consent. This is evident with people participating in haunted houses and visiting other fear inducing attractions where they willingly place themselves in a vulnerable situation, but once a threat is inflicted somewhere they established as a safe space (ex. home) they become truly terrified and only desire escaping the situation.
Now, why is that people desire some forms of fear in the first place? Well, there could be several factors contributing for the human lust towards fear: the adrenaline rush that accompanies fear, satisfying one’s morbid curiosity, and simply wanting an escape from something worse, boredom, are just a few reasons that come to mind and of course many of these reasons come and go — with desire spiking up and down. These factors leading to our desire can become a sort of drug, this rings especially true with rushes of adrenaline. As people enter low periods of excitement they will seek out something to bring it back to a higher state, such as fear. This is where the appetite for fear becomes insatiable.
Just like any drug, fear stimulates our brain to a point where an average day-to-day life cannot. With people desiring to be elevated to that stage of excitement over and over again. Our most primitive instincts do not desire amity, instead becoming greedier and lusting for greater rushes of adrenaline and excitement.