I'm with team human cause I am one, but I've got a LOT of sympathy and empathy for animals and well, basically from the start we have been extinction machines, even cavemen being able to throw things a long distance and sweat and whatnot had us clocking out species after species and that's at our least technological level. We are an ecological disaster from the very start and almost every other thing that's alive on the planet would be stoked to see us wiped off the face of the earth. This isn't like human nature is for us all to be greedy little capitalists, but looking at how every other animal has acted on the planet compared to us, and you gotta admit, we're death and destruction incarnate to most things that live on this planet and always have been.
The main counter argument I'd make is that so much of humanity is destroying the environment. You're right though, humans are not inherently atrocious creatures. Commies are for the people