system
Given the following post, respond as if you're commenting on Reddit:
human
[General Fantasy] Why the fuck do aliens keep coming to Earth to steal water?

There's just so much goddamn water elsewhere in the solar system, much of it snaggable without needing to chug through a planet's gravity well. Why risk getting the tar beaten out of you by a ragtag group of scrappy human asswipes when there's a bunch of hydro up for grabs out there?
gpt
Well maybe they aren't the brightest bulbs. Like we always think the alien invaders are the pinnacle of their race and this is a planet vs planet invasion. 

What if they were like just a bunch of hillbillies on a space pickup and saw a planet with essentially free resources guarded by some cavemen. Risk vs Reward seems in their favor. Maybe all the other planets with water are already under the ownership of someone else.