Humans will get what they deserve. The abuse of the Earth's resources, the mass exploitation of animals for the sake of profit will have its consequences. We won't see these consequences because we are blind but the there will be.
Having factories slaughtering animals so your hurried self can grab a burger while you rush about is just another example of mankind's fall. But, we all think we're so advanced and modern with our fancy gadgets and our education.
Also, please stop comparing humans to animals. Humans are the epitome of greed and excess. An animal will kill another animal because he has to. We humans kill animals because we can and because it gives us pleasure. It makes some of us feel more masculine, or more "alive." Don't give me that excuse that we need to hunt to eat. That is a BS excuse for you to use your little gun or arrow or whatever killing device you have.
But anyway, carry on with your destruction of the Earth. Don't cry when there is great imbalance (like there is now) in nature.