"I once encountered this girl on the Internet who told me a story about how she once was at a train station and about to get on her train when she suddenly felt like there was a voice screaming at her, saying "stay away! stay away!" And she was freaked out and actually did run away. She was watching the news later that night and it said that the train she had been about to board had crashed that day."
That could've been me

. When did you chat with this girl? What site? Was it Dutch?
ontopic: I do not know what exists and what does not. I'm not afraid of vampires, but is that because I don't believe they exist? I'm not sure. We experience the strangest things in our dreams, but who says that the 'waking world' isn't nothing but a dream? I don't think we can comprehend the true face of reality, our minds are just too limited in our current 'mortal' state. We can't even comprehend just how long a distance a lightyear is. Try it. I guarantee you'll fail.
So then what? Let's say, for the sake of arguement, that all those monsters and demons you mentioned do exist. Will worrying help? Will you be able to fight them? ALL of them? Should you even bother? If today you were diagnosed with a fatal illness that will kill you in three weeks, would you still live in fear of vampires visiting in the night? Or would you be curious and strike up a conversation? Why not do so without the diagnosis? I'd be a shame to miss such an opportunity, only to flee in panic, bolt out of the house and get run over by a bus, so to speak. Let go of your fears and they'll let go of you.