The sea refuses no river.

I need to be clear about something else. Humans are not killing the planet. Industrial humans are killing the planet. Humans who identify more with this culture - this culture of plastic - than they do with life are killing the planet. Humans lived on this planet for tens or hundreds or thousands of years without destroying it. It is only in the last 6,000 years or so that a culture toxic enough to kill the planet has emerged.
The choice we face is not between killing ourselves and killing the planet. The choice we face is continuing this way of life that is killing the planet (and us) or not. We can allow this culture to kill the planet, or we can destroy this culture. It really is that simple.