Alien Expansion Pack Theory
Fermi's Paradox could be explained by Simulation Theory. It should be considered that this universe does not include the alien expansion pack.
Odd things like the speed of light and distances between planets could be just a convincing way to stop us and conclude why we haven't met aliens, like an object that blocks your path in MMO. If we traveled for a really long time with cryogenics, we might even hit that mystical wall that stops our ship in our tracks, and we still wouldn't be sure what is going on. It wouldn't prove anything but there being another mysterious property of the universe that really doesn't make sense.
It also hints that God could be a corporation and that we pay for this universe, and decided to choose the universe that didn't include aliens. It could also mean that this universe doesn't have aliens because it doesn't meet the purpose of this universe if it exists for other purposes like public education or a prison sentence.