Remind me, "better" is based on whose judgment? And if all the humans are gone, whose ethical priorities have been satisfied? To ask a loaded question, is species-suicidalism exactly as pathological as the individual variety, or is it far, far more so?
If we are making ourselves miserable as a species then that is our problem, not the Earth's.
If we are making ourselves miserable as a species then that is our problem, not the Earth's.