POLL: why why why do annoying neighbors do this?

Because they're selfish. Mine like to light fires then leave them unattended (they almost set my yard on fire once, I had to call 911) and leave their goats and donkey out (then get pissed at me because my dog attacks the goats when they get into my yard). Also, they seem to get great pleasure out of allowing their huge dog to roam the neighborhood, and he is not a friendly big dog. He once came into my yard and commenced to growl at me for opening the door.