Being deceived into thinking the perks of slavery are a good thing, we can easily aquire a preference for chains and a taste for the slaves rations.
They are who we thought they were!
The secret to success is to start from scratch and keep on scratching.
Babies are saved when Christians show up.
Being pro-life doesn't save babies, acting pro-life does.
It's pretty easy to think of the idea of a story, and maybe even to write a scene or two, but understanding the ebb and flow of a narrative, where to leave the little clues your protagonist (and reader) need, while playing fair, takes a lot more skill and patience than you might think.