Why aliens? Why not mole people? Or chupacabras with lasers?
In everycase, they'd be strangers, so, aliens.
and showing up on our ressource gathering ground, so even by shadowing some grass with their ship/houses/mole holes they'd be competiting with us for ressources, and deserve to be punished.
Expression of the post modern paradox : "For the love of god, religions are so full of shit"
Theory is always superseded by Fact...
... In theory.
“I’d hate to die twice. It’s so boring.” Richard Feynman's last recorded words
"Great is the human who has not lost his childlike heart." Mencius (Meng-Tse), 4th century BCE