I think people are interested in it because its abnormal. its fascinating!! Psychologists believe our interest in true crime and serial killers stems from it being a simple way for us to explore a dark world from the comfort and safety of our own homes. At the end of a documentary, we can switch off and return to life as normal.
In the Middle Ages, some people believed that denial of worldly pleasures would please God. During the Renaissance, many believed that God intended them to enjoy those things.
