Many religions have at least one apocalyptic myth describing the end of the world accompanied by a "savior" who appears in the sky at the last minute to rescue the "chosen" from annihilation or wrath. Mayans, Assyrians, Egyptians and Greeks held similar beliefs. Hopi prophecy talks of a time of great destruction, when their lands will be preserved as "a blue star, far off and invisible, makes its appearance." Today, even factions of the New Age look for a techno-savior to appear in the clouds to save mankind from itself.
My fear is that we've allowed ourselves to be manipulated into believing in imminent salvation, either independently or perhaps assisted by the psychosocial "control system" suggested by Jacques Vallee. As someone who thinks we are indeed interacting with some form of nonhuman intelligence (which in all likelihood transcends the scope of ufology), I don't find the idea repellent -- just appallingly unlikely and childish.
Either we make the evolutionary cut on our own terms -- an achievement that will probably redefine our identity as sentient beings -- or we do not. Both possibilities are fraught with an almost vertiginous sense of displacement and the gnawing specter of transience.