If taking it from a psychological viewpoint, I'd say the current mass-opinion of the people is somewhere between fear of the unknown, fear from being labeled as a crackpot/unscientific for discussing such subjects, and fear of "they will kill us when they come so better forget about the whole thing".
Don't think we can move to the point of a planetary civilization/society if we don't start acting like one. And talking about aliens and the possibility of them being here, even walking among us, shouldn't be tabu. Talking about the possibility of a 3some is ok, but aliens?, pfff, come on





