Darkness Overwhelming

The sun is shining heavy above and the wind blows a gentle breeze. The ship is calm against the waves and the rocking is null. I walk towards a group of familiar people, all seem to be searching for something. They remind me what I am supposed to be searching for; A body, a host for something more nefarious than I can conceive. I search and find a door, it's the door to a room in the house I've known all my life. I unlock it and it opens to my left. When I walk forward, the only illumination comes from behind me, and there are few shadows I can derive from the darkness. As soon as my body is nearer, a shadow approaches from the depths. I attempt to retreat and am overtaken by the smog. My body is crumpled down and I am suffocating in the darkness; Unable to scream, to move, to breathe, and a dread overtakes me knowing I am now the host. I am a tool for the darkness and I am forsaken. 

I had this dream several times throughout my childhood. I never knew what it meant or why it continues. I still fear the shadows sometimes. 

Why we are afraid of the dark is an eternal question.