There was a doorstop novel from the '80s called "Kin Flicks" which seemed to me to be a portrait of the kind of totally submissive personality that vanillas imagine as slaves. She goes from one dominant character to the next, making herself over every time into whatever they want her to be, and ends up sitting at home going over her memories and trying to figure out who she really is when nobody's telling her what to be.

I've seen real people like that on other D/s lists, and it is painful to read them describing how they are abused by some bastard posing as a Dom, and then asking the list to tell them how they can cure themselves of resenting his abuse and make themselves into the mindless flesh-toys that they think a slave should be.