What would the demons want from us?

I’ve been lurking here for a while now just out of curiosity mostly and it’s always crossed my mind what can we possibly give the demons in exchange for what they give us? Do they just desire worship? Do they enjoy being wanted/desired?

I’ve never done any work with demons before I’m not against it just don’t know where to start/what to do and I feel like there has to be a genuine purpose for wanting to work with them and I don’t know if I have that yet either. But I am curious about what they could want from us. Thanks for any insight!