demons go into pigs

 This miracle demonstrates some unknown feature of humans. A human was possessed by a huge number of demons. The human was largely non functional, as he lived outdoors and terrorized anyone nearby. When Jesus commands the demons to leave they negotiate with Jesus. The demons get Jesus to send them into about 2000 pigs. The pigs immediately commit suicide. So somehow the human was not suicidal, even with a huge number of demons, more demons than 2000 pigs could tolerate. Somehow humans have a huge capacity for demon possession that pigs, and maybe animals, don't have.