Good horror is written by people who understand that fear is one of the cardinal passageways into the core of humanity. Good horror is generally written by folks who grew up on horror; books, movies, etc. You can’t simply decide to write—in any genre—if you don’t first have an understanding of the topic and a strong mental backlog of reference.

A lot of things that we cannot buy and sell in markets used to be totally legal objects of market exchange - human beings when we had slavery, child labour, human organs, and so on. So there is no economic theory that actually says that you shouldn't have slavery or child labour because all these are political, ethical judgments.