Ever wonder if the UFO phenomenon was purposefully made to look like a new thing when actually it could have been a common thing in the past.
That would keep people from asking questions.
It would explain why religion is so deeply rooted in mankind’s mind. If we were often visited by Angels and Demons. Of course, we are told they aren’t real. But what is more fictional? Hobbits, gnomes, elves, giants, races… we could have had a very diverse genetic base from the occasional ET visitor.
Now they avoid us, once we got the nukes and other techs that can hurt them. I wouldn’t be surprised if they put up a warning sign outside our solar system.