There certainly is a fascination with strong, reproduceable emotional reactions in some autistic cases though. They also seem to be fascinated by certain emotional reactions, that make no sense to them.

They do understand that they hurt people, but the fascination of finding something adhering to rules, is stronger.

@Scandinavian: Relatives of mine. One in particular, enjoys trolling me, and i sincerley hope its limited to me. Others might not understand the sense of humor, and it particular, the endless "reproduce" joke and reaction sequence.