Answer:
The darkness is extremely harmful to the average human. some people like the darkness so they live a dark life and become immune to it. other people hunt the darkness like me and they are the least effected by the darkness due to the fear they dont have. The darkness can be considered as demon, spirits, possession, and many more types of paranormal and nonparanormal instances. I would advise you not to hunt these things down because once you try to kill a demon or rid a spirit you tend to make it mad. thats how i got the scar across my chest, it was a demon and they dont play nice but they thrive in the darkness. So the darkness and easily harm people in many ways.