They dont care. Their human consciences have been mutated and perverted. They will give up their lives happily to serve the Borg.
So sorry that you seem so frustrated. I'm not sure that what you see is the whole picture, though. First, some do care. Second, opening their eyes and restoring their critical minds is a process for some people. However, yes, some people don't care.
Some people love their little JW happy bubble and see nothing else but what makes them comfy and gives them a sense of security. No easy answers, no quick fixes.