Remember that test scientist did with the rat in the electrified cage? when they first electrified the cage floor the rat looked for a way out frantically. After so many times of not finding a way out the rat accepted there was non and just took the pain. When they opened the cage door the rat sat and endured the pain even though there was now a way out.
the rat says the same thing we say: "Too good to be true, too good to be true."