>>53247042Also, succubi are the demons that due to their nature are most likely to intimately interact with mortals (not like that! At least not entirely; this is stiff succubi we're talking about). Something like a balor will likely not interact with mortals aside from bringing death and destruction to anybody unfortunate enough to be standing nearby when it gets summoned. Even a demon making contracts with mortals for their souls (which in DnD is more of a devil thing, but I digress) will usually only interact with a mortal when making a deal, and while it must undestand how mortals think well enough to know how to entice them to hand over their soul, it has no need to imitate how mortals act.
A succubus, on the other hand, is expected to infiltrate mortal societies and remain hidden, manipulating people and seducing them to evil. To do so it needs to be able to pretend to be a mortal convincingly enough that it won't be immediately spotted. Ideally, you should not be able to distinquish a disquised succubus from a regular mortal without using magical means. And to pass off as a mortal convincly enough, the succubus needs to do, or pretend to do, all the things mortals do, like interacting with people, having friends, not being a turbocunt 24/7, etc. I wouldn't be particularly surprised if a small amount of succubi, after spending long enough time pretending they have normal human lives and relationships start longing to actually have those things, and to live a life where you don't have to spend every waking hour scheming to kill your enemies and avoid being killed yourself.