Uatu:
History has shown from age to age the human condition. They need a hero. A champion. A Savor. But when salvation has come, they turn on that embodied hope.
X-51:
But why?
Uatu:
Because to be saved is to be weak. And to be weak, one must acknowledge that one exists in a constant state of need. That, in his natural state, man is found to be lacking. For the last time, X-51, mankind resents its heroes because it needs them. And because, more than the heroes themselves, man hates his own neediness.