system
Given the following post, respond as if you're commenting on Reddit:
human
[Thor 2: The Dark World] Malekith's motivations

Was Malekiths plan to turn off all the stars in the universe ideologically/religiously motivated, as it seems patently self-destructive. 

Or was it semi-rational (the dark-elves had enough technology to survive in a dead universe, so would be ok, but still - *why* kill everything else in the universe?), or was there a reason that would be seen as actually rational from our perspective?
gpt
The Dark Elves evolved during a time before stars and light were a thing, and never changed when the universe became so filled with light.  This is why they're dying out in the current universe.

They wouldn't just be able to survive in the new world Malakith was creating, they would *thrive*.  It's the opposite of self-destructive, he saw this plan as the only way his species survives.