Perhaps Earth Day is a good day to remember this fact. Earth Day, which I remember from my youth as green-tinged and vaguely hopeful but which has taken on a grimmer tone in these days of global warming and Extinction Rebellion.
I have a much more protective feeling about the Earth now than I ever used to. And while I'm adding to the carbon load with my work flights to foreign shores, the travel those flights made possible is opening my eyes to the work we have in front of us, to the need to protect this good old Earth, which grows more vulnerable and more precious every day.