“Man has gone out to explore other worlds and other civilizations without having explored his own labyrinth of dark passages and secret chambers, and without finding what lies behind doorways that he himself has sealed.” -Stanisław Lem
One of the questions that’s fascinated humanity since we first began looking up at the night sky is whether or not we’re alone in the Universe. Although we now know of other stars, other planets, and potentially inhabited worlds, we have yet to make contact with another intelligent species. Despite our curiosity, a great many people live in fear that if we did begin communicating with extraterrestrials, it would serve only to announce our presence to a potentially hostile (and more advanced) civilization.
No one wants humanity wiped out, of course, but no one wants to bury our heads in the sand and to cease the search for one of the ultimate truths about our Universe. If you take a detailed, logical look at the problem, three possibilities for aliens emerge: they’re uninterested in us, they’re interested and benign, or they’re interested and malevolent. But even if they’re malevolent, they likely pose no danger to us, which you only learn if you put your fears aside and view the situation rationally.