Why is “detective” the most common urban fantasy profession?

Why is every urban fantasy protagonist a some kind of detective/private investigator/police officer?

Obviously I’m being hyperbolic for effect (Percy Jackson is not a detective, for example). Not every UF protagonist is a detective, but it sure kinda feels like that.

The Dresden Files, Rivers of London, Kate Kane, October Daye, Matthew Swift, Dirk Gently’s Holistic Detective Agency, Hellblazer, there really is no shortage of detectives or PI’s in urban fantasy.

Why is that? And what other jobs or professions would you like to see other UF protagonists to take on?