It just doesn't make any sense. Resources are limited, sure, but they're not scarce. In fact, they might not be limited even. If something can afford to come to

It just doesn't make any sense. Resources are limited, sure, but they're not scarce. In fact, they might not be limited even. If something can afford to come to Earth, they can afford to get unlimited resources from anywhere. Unless you're positing it's from one of our nearest stars and then just happen to be coming to Earth as a last ditch effort or something. I mean, scenarios can be imagined where an alien would want to destroy life on Earth, but they seem far fetched.