Best response. Almost everyone alive has a net negative impact on the environment. Maybe that one Indian guy who planted a whole forest by himself gets a pass. We can try to be less negatively impactful depending on our inclinations, resources, and other interests and priorities. Some people may choose vegetarianism, some might buy an electric car or install some solar panels, some might organize politically for a new policy. Some might spend their altruism improving social conditions rather than focusing on the environment. But being ever so slightly less of a negative impact on the environment than your neighbour who has a slightly different set of priorities is hardly a reason to feel morally superior.