I used to play with my cousins out in the cornfields behind my grandparents house, we used to play hide and seek for hours. It did get majorly scary and if you were out towards dusk it always felt like someone was right behind you....ooo..chills.
Seeing as I'm surrounded by them, it makes for some good times sneaking up on people. I think the scary thing is how you can see nothing--and all you can hear is the occasional rustling. It's alright when there's light, but let me tell you, surrounded by them at midnight near a creepy old house (with a tub of something that looked like blood, with gold cups inside it) is nerve-racking.
My first fall in my new house in the country was creepy ..I worked afternoons and wasn't getting home til almost 1 am...When I would drive by the cornfields I always felt like someone or thing was watching me...If the wind was blowing just right I would roll up the windows because I was getting freaked out. (always had children of the corn in the back of my mind) After awhile I wasn't too freaked out that is until I was driving home one night and got that creepy feeling of being watched, I rolled up the window and turned the corner only to be hit in the driver side door/and window area by a deer....Scared the living crap out of me. Always wondered was it a freak accident, or was the deer running from someone or thing...
i found cornfields a safe place, not a terrifying place.
i hid from three thugs one time by fleeing into the corn fields near my grandparents farm. lol. i had years of experience playing in those fields and managed to give them the slip no problem.
but i can certainly see why its a great place for a horror story setting. easy to loose your sense of direction if your the type of person that gets lost easily.