It is quite apparent that you are a kook. No one said anything about killing off all of anything.
You think we are a freak of nature, don't you? That mother nature, or whomever you pray to, didn't see us coming. That we are an aberration? Isn't that in conflict with your notion of the perfection of the natural world?
What if a couple of wolves came along and ate those beavers? That would be ok, wouldn't it? Because they have learned over thousands of years and generations that beavers taste good and are good for them. So would it then be ok with you if a couple of humans came along and ate them too? Because they had learned the same thing, and because natural selection and had made us strong and smart enough to trap them, skin them to warm oursleves, and eat them to nourish ourselves?
Your argument will be that the farmer will not eat them, and does not need to eat them nor use their pelts to keep warm. That, again, belies the truth that nature has taught us how to best care for ourselves. That includes how to cultivate and grow food for our sustenance, and how to keep other animals from keeping us from doing do so. I suppose you would have us all go back to living in pre-industrialized times in order to be in harmony with the rest of the world?
You are a fool, and your thinking and logic is wrong-headed. What about the other animals that are adversely affected by the dam the beavers build? And the plants that are now under water and cannot grow that would feed naturally grazing animals. Do you think that there are none? Incorrect again. There are many if both.
You, and those like you, are quick to blame humans first, and I would guess America too. As though we, and it, are the cause of all evil in the world. It must be hell to live inside your head.
Good day, Sir Kook. Go hug a tree!