If an alien culture was so dependent on water that they would travel lightyears and obliterate millions to get it, it must be extremely rare on their homeworld. if it is that rare, how did they grow to become so dependent on it? And if they’re resourceful enough to track it down on a tiny speck of a planet halfway across the galaxy, wouldn’t they be smart enough to either find an alternative or at least an alternative and more viable source?
I’ve always theorized that if aliens wreak havoc on earth, it would be accidental — the introduction of some fatal element into our ecosystem, for example.
Why war for water when there is more water/ice in asteroids and such you can have without a fight.
Imagine a film where we fight to keep aliens from taking “our” ice asteroids?
Sometimes you might also tap the phosphates ~ to use in manufacturing food for biological purposes.
Kudzu.
The closests two stars which could have such a civilization are a couple of billion years older than our star. Can we extrapolate from that regarding the formation of life and the time spans associated with growing out of the suicidal behaviors? I think we should. Perhaps God made humankind different from the other intelligent creatures in His Universe, for reasons known to Him but not yet explained to us. we are a very primitive species. There is Bible teaching which says we shall not always be so primitive.