Extraterrestrials may have similar laws on a galactic scale.
We split the atom, but made weapons out of them instead of trying to reach the stars.
They leave us alone out of fear that well destroy ourselves if war accidentally breaks out.

Per Johansson
What if life on another world was not carbon based, but another element?
swheels125
We bore them
They came, they saw, they werent impressed.
SLObro152
Theyre studying us
Any species advanced enough to find us wouldnt make contact.

Theyd study us the way we study animals.
Ideally with minimal interference.
BattleBornMom
4D
UFOs are higher dimensional objects moving through our dimension.
Theyd have no idea what they were looking at.
So wtf would a higher dimension object look like passing through our 3D dimension?
Gravity wouldnt effect it (I dont think).
It wouldnt appear to have any form of propulsion.
But, we could harpoon it.
Our most powerful broadcasts have traveled at best a few dozen light years from this planet.
To put that into perspective…
The universe is still in its toddler stage in age and we are the first intelligent people.
A civilization so advanced, long ago, that traveled the stars?
Were seemingly alone because were the first.
Maybe theyll stumble upon us in a million years.
Cross that indistinct memory with a sleep state subconscious and standard psychological patterns and boom; alien abduction.
It also explains the sensation of being lifted, examined and probed.
Riccma02
Time zones
Aliens may percieve the passage of time differently than us.
Our whole existence could play our before theyve had their proverbial morning coffee or vice versa.
dreamwithinadream93
They arent coming back
Aliens landed once in Africa, got eaten by lions.
Planet now marked as dangerous by the Galactic Feds.