Supposedly, the Fermi Paradox states 4 things.
1. There are billions of stars in the galaxy that are similar to the sun, and many of these stars are billions of years older than the solar system.
2. With high probability, some of those stars likely have Earth-like planets, and if the earth is typical, some of these planets may have developed intelligent life.
3. Some of these civilizations may have developed interstellar travel, a step the Earth is investigating now.
4. Even @ the slow pace of currently envisioned interstellar travel, the Milky Way could be completely traversed in a couple million years.

Conclusion: If extraterrestrials do exist, they would have already visited Earth!

Now, let me tell you... THEY HAVE! These aliens made a deal with the Council of Interstellar Affairs (A top secret organization, see forum post on the subject here: https://www.simpleplanes.com/Forums/View/740397) to exchange technology and knowledge, as well as allowing the aliens to experiment on earthbased life forms. These alien’s headquarters are in Dulce Base, New Mexico. Area 51 is just a cover!

Rebel! Throw the wool off your head! We are not free! But we can be! Revolt, Sheeple!