I have a strong dislike of centipedes as well. One time years ago I had a terrible dream that a large centipede (one of those big jungle ones) was crawling all over my body. As it raced down my arm I slapped at it, with a jolt of pain my arm went instantly numb as it bit me.

I startled myself awake to realize I was laying on my arm and it had gone completely asleep and was numb. Still one of the scariest dreams I've ever had haha.

What? Why would it be? I think humans are scared of anything that surprises them or that they cannot immediately understand what it'll do. But why centipedes in general? I've never had any fear of them, unlike other arthropods that moved more erratically and faster.