I always thought diagraming sentences, like doing geometry proofs, was FUN!
But then I'm a wierd 4 eyed geek. One who used to wear "railroad tracks" on my shoulders. Several of my fellow Geometry geeks did that too. Two of them went to West. Point.
Whats a railroad track? As far as horror I guess it depended on the teacher . I had one with a personality like nurse Cratchett.Tell you what though, It definitely taught you sentence structure and word classifications.