Less human than human
Sometimes ignorance truly is bliss. Sometimes there is such a thing as knowing too much about someone. Sometimes you can find things out that shatter you, disgust you, or disappoint you. Sometimes that nice fella you thought was so special and nifty, turns out to be a multi-faced loser, and your ideas about how you perceive people, your ideas about your own ability to judge, get yanked out from under your feet. Sometimes people think it's best not to be curious and not to find out that not only are your heroes human, but that they're also less than human.