Creation destroys as it goes, throws down one tree for the rise of another. But ideal mankind would abolish death, multiply itself million upon million, rear up city upon city, save every parasite alive, until the accumulation of mere existence is swollen to a horror.
You have to suspend disbelief a little bit to buy into your situation and to the story and to how the character will react. You have to tweak your credibility a little bit, is basically what it comes down to.