It's an "all hands on deck" situation, yet everyone seems to think that someone else has to do something. You don't need to be a martyr, just to make an effort.

At the very least don't brag about not giving a crap.

> If you truly care about the planet, don't have children.

That's a fallacy; people care about the planet precisely because of children. I don't care about the planet for its own sake; I care because of the humans who inhabit it and their future lives.

Also, humanity spent 100,000 years without flying around the globe, and I doubt they were all living hermit martyr lives.