When people write novels about aliens attacking dath ilan and trying to kill all humans everywhere, the most common rationale for why they’d do that is that they want our resources and don’t otherwise care who’s using them, but, if you want the aliens to have a sympatheticreason, the most common reason is that they’re worried a human might break an oath again at some point, or spawn the kind of society that betrays the alien hypercivilization in the future.
“What actually happens if you break a real [dath ilani] oath?”
“There’s only one copy of the real oath. Anytime that anybody anywhere breaks it, people over literally all of Reality, the greater Everywhere, everything that there is, become a little less able to trust it.”
“Also, in Golarion terms, Asmodeus is probably now really really really pissed at you, and requests the entire country of Cheliax to drop whatever else it’s doing and turn you into a statue so you can’t ever do it again including in an afterlife. Though that part is just a guess.”
…
“What do they do to people who break oaths in dath ilan?”
Minor spoilers for planecrash (Book 1) and the dath-ilani-verse generally.
Minor spoilers for planecrash (Book 3).