What The X Files gets wrong about "aliens".

First of all and this needs to be said, Mulder and Scully were incompetent. Go back and rewatch the show. When was the last time they were ever able to save anyone, or prevent a monster from killing people? By the time they figured things out it was always too late. Mulder couldn't even have sex with Scully until season 7. And even that was only implied, or off screen.

Now on to the subject of "aliens". What we think of as the greys are not actually aliens at all. They are in fact demons.

They posses people and that's why "abductees" are all messed up. Even the supposed "crafts" they are alleged to use, the "U.F.O.'s"  make no sense as being an alien ship. "Ghosts" are the same way. The supposed spirits of the dead that haunt houses are really demons spirits.