been toying with the concept of vampirism as like, needing something that you inherently can't provide for yourself. vampirism as dependency- especially in cases of vampires who refuse to (or straightup *cannot* for whatever reason) feed on anyone without consent, who must rely on blood freely given by living humans.
an independent young adult, so eager to move out on her own and see the world by herself, is turned into a vampire. her human parents are willing to feed her, but now she'll be dependent on them. she can't move away, can't stray too far from the family farm by herself, because she can't be too far from her source of blood for too long. she's afraid of what will happen when her parents are too old to give blood to her, if she'll be able to find someone else to depend on. she'll outlive them all eventually, if she's not left to starve.
a sociable vampire with a wide network of human friends who are willing to offer up their blood to her. they're happy to help her, but she still feels like a monster for having to take their blood all the time. she tries to take as little as possible while they beg her please take more, we hate seeing you so hungry all the time, please let us help.
a vampire trapped in an abusive marriage because he relies on his wife for blood. if he leaves her without an alternate support system to feed him, he'd starve. she isolated him from all his other loved ones who might've been willing to feed him years ago. she holds the fact that she gives him her blood over his head anytime he tries to defend himself.