I agree that demons have little to no care for your existence. They exist on a different level than we do, and have different things to worry about than just messing with humans via possession. They can help you, it they can really mess you up. Ultimately though, they tend to leave you alone unless you summon them or disrespect them in some way. Demons are sometimes summoned to help in a spell or with some kind of work. When they are summoned you should be immensely respectful, and understand that they do not have to do anything you say. Some people get cocky, think they can do anything, and demand the demons to do this or that. I view demons in a way like humans. They have free will, are notall different, and may respond in different ways.
I do not believe that they hold a hatred toward humans. They are not like us emotionally. They exist on a different level than us, as I've said. They wouldn't even stay in one place for a long length of time of they're own free will.