-Bloo-,
Xenomorph,
12 years ago
Because Xenomorphs can sense that synthetics aren't organic (in other words, useless), the bots are "killed" before they cause any sort of trouble.
I don't believe Xenomorphs are the type of species to let the synthetics go and just collect the humans. Maybe if one or two synthetics are in a group without any people around and are, for the most part, harmless. But they can potentially hinder or even halt the assimilation of a group of humans, and so they're killed off.
Take, for instance, corgis. For all intents and purposes, they're useless when it comes to my basic needs. I don't attack them for fun; they're just there. But when I haven't eaten breakfast and that bitch won't leggo my Eggo, you can bet one of us is going to fucking die. Is it because I hate corgis? No, I think they're relatively cute, and one of them was a main character on Cowboy Bebop. I am not the villain here. The real villain is poachers.