Nature: Are Humans Good For Planet Earth

For millions of years the planet got along just fine without our leadership. The trees produced oxygen, the oceans produced fish, and sure the planet got hit by a meteorite or two and the climate got hotter or cooler but species survived or not on their own abilities. It was a natural thing that determined a species success or failure. Then we humans took over.
Two things happened. First we decided that we were more important than any of the other species and second we increased the speed of change.