I am scared of the dark. Like, run and and take a flying leap into bead to pull the covers over my head afraid.
When I told my mother this her first thought was it was the enclosed feeling that sometimes accompanies total darkness. This makes sense because she is claustrophobic. But I'm not scared by the closeness of the choking blackness. I'm more afraid of the not knowing. In darkness things are hidden, there is uncertainty. I don't like not knowing what's around me.
The things you can't see can and will hurt you. That's what cancer is like. I am a firm believer in the unseen. There are bad things out there when you can't see them.
But also there's the monsters.