There are two things that I have been reading here over and over which brought to my mind two questions:
Some people summon demons for a simple thanks or just to know them, basically to simple chat. Will that not annoy them considering that they may be busy with important stuff or actual requests? Or are they so powerful that they can form a high amount of avatars and talk to multiple people at once without any problem?
What do demons get out of helping us? Some rituals have offerings which make sense, they get the offerings in exchange but I have often read of demons helping without even a proper ritual or offerings. Why would they do that?