These "so called" aliens have specific behavior patterns and their interactions with humans always seem objective-oriented...and that objective, whatever it is, has to do with human reproduction and sexuality.
Many abductees (they are abducted over a lifetime) seem to fall prey to what we call "Stockholm Syndrome." But, before they begin to identify with their abductors, they describe them with powerful and consistent adjectives.
Some call them "evil" (I leave that to your imagination as to why they choose that term)...and some call them demonic. But everyone, at one time or another, says they (the aliens) are "liars"!
BTW, Whitney Strieber (an avowed atheist) in Communion said that when he was first abducted (actually the first time he, as an adult, remembered being abducted), he felt that, when in the presence of the "aliens," he was in the presence of profound evil!
The abduction phenomenon has all the earmarks of what, in human affairs, would be malevolent black ops by intel agencies for unknown but destabilizing purposes.
Quix, get over here (if you aren't already here)...
WiKi says this about Streiber:
"Whitley Streiber is currently a practicing Catholic."