Humanity is actually under the control of dinosaur-like alien reptiles called the Babylon Brotherhood who must consume human blood to maintain their human appearance.
Aliens didn't come down to Earth and give us technology. We invented it ourselves. Therefore it can never be alienating; it can only be an expression of our humanity.
Perhaps we've never been visited by aliens because they have looked upon Earth and decided there's no sign of intelligent life.
If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans.
The more you can increase fear of drugs and crime, welfare mothers, immigrants and aliens, the more you control all the people.
I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on planet Earth.
Let us never forget that government is ourselves and not an alien power over us. The ultimate rulers of our democracy are not a President and senators and congressmen and government officials, but the voters of this country.