system
A chat on 4chan
human
>Hijacking food and reproduction
ok, lets see. Did you know that the meat you buy in the store is mostly from female animals?
Or what about all the E's in the food, the chemicals or fluorid?

>Introduce new invasive species of edible plants from their own world, and use us as broodmares to help propagate their race
that one is hard to tell since we know nothing

>You can't take over a planet if there's nobody to take over
what is the implication of that 'somebody'? can we really tell what the worth is for them, they see in us or the planet?
gpt
You don't seem to recognize that the second sentence was describing the method of how they will hijack us
It's possible that their own race has left for our planet, because a certain system on their own planet collapsed and took down every other part of their society with it.
A lot of science fiction plays around with the idea of Aliens having either no medical system or their medical system having collapsed completely
human
Well ok, we might have to understand the reason for the need for their space travel first.
It's either for the purpose of discovery or refugee.
If it was for discovery, they could have sent a drone.
But since we speak about actual aliens in space we might also consider that their homeworld is no longer, they are here for the purpose of survival. 
What are the implication of an entity who needs to survival in recards to antoher species?
gpt
Well, if their medical system is what caused so many issues, maybe they're hoping our system is better or more advanced than their was, even if that hope might be false