system
Given the following post, respond as if you're commenting on Reddit:
human
[General sci-fi] Why do aliens invade the earth for resources in some movies? Is there any resource on earth besides habitability not found in abundance in every solar system?
gpt
Personally, I've always thought the whole "we're here for your water" is a cover up.  Most races are looking for dilithium crystals.  But, if they show up and tell us that's what they are after, we'll want to know why.  Next thing you know, we'll invent warp drive, phasers and photon torpedos and come after the guys who robbed us.

So, while we're busy trying to stop the aliens from taking our water, they're making off with the good stuff...   :)