"No, but they already have us so why waste the effort? It's less work to just keep us alive." Besides, they needed the emotional snacks, right? Some fresh water shouldn't be too hard. Hope did all the food already. Or most of it, anyway.

"As long as we're useful, they're not going to let us die from something as mundane as starvation or thirst. Not when they can get fear or anger or sorrow out of it." If nothing else, someone could make a deal for it if things got desperate.