I don't believe in ghosts, ghouls, spirits or anything of the like. So why am I still afraid of the dark?

There is no curtain things like ghosts for sure but Jinn does exist.....but they r not visible n will not disturb u InshaAllah.....and if u r afraid of dark first u should think if it is any mental disease which makes u worried about dark though u have courage...if then it is simple go to psychiatrist n if it is not a disease then i shall say u have not complete faith in ur believe.....in that case i give a true info that when a man dies his soul is under the control of Allah.....the soul having his punishment or reward.....so it is totally impossible for the soul to scare u....