Im scared of the dark because I dont know what it holds. Ive always been scared of things I dont know about. Just as an example Ill use movies. Jeepers Creepers freaked me out until I actually saw the monster's face. I know what you did freaked me out when I was younger until I saw the killer without his raincoat.
I think Im more scared of the ideas behind things than the actual thing. Kind of the whole bark is worse than the bite scenario. It goes for a lot of my life actually, I get anxious about certain things until I actually do them and realise they're not that tough, but with each new obstacle I still get apprehensive.
Its pretty much ike that quote from V for Vendetta: "We are told to remember the idea, not the man, because a man can fail. He can be caught, he can be killed and forgotten, but 400 years later, an idea can still change the world."