system
Given the following post, respond as if you're commenting on Reddit:
human
[Aliens] Why do Xenomorphs kill people?

Do they eat them for nourishment? Just wondering if they have a point besides homicide?
gpt
It's just in their nature. They were designed and bred to become biological weapons by the Engineers to attack and kill anything that could possibly pose a threat to their ecosystem. It's kind of like what happens when you wave around a piece of string or a laser pointer around a cat - it's just instinct.