> There's the killing again.

Do you not understand how ecosystems work? Or how populations of predator/prey are in various (usually) oscillatory states?

> Humans have already stolen so much from nature and the animals

I'm confused, are you saying humans are somehow not part of nature?

Sure they are. But try mentally reversing the situation. If any other single species occupied and changed the landscape as much as humans they would be viewed by humans as the most horrific plague on earth.

So I'm just a little empathy would be well placed here. A little effort to try and co-exist with the other inhabitants would not be out of place and as a bonus you can think a little better of yourself.