Life on Vulkanus, the lost planet of our inner solar system (based off the real life hypothesis of Vulcan). It is a carbon planet, its crust consisting of carbides, graphites and diamonds instead of sillicates. Its seas are made of petroleum.
I think many millennials are secretly unbloomed xenobiologists, xenopaleontologists, or xenarcheologists. We grew up seeing all those promises of technological wonder and new discoveries, only to become grown ups worrying if tomorrow there will be breathable air, food, and a home. With this came an unhealthy (for our minds) hate towards managers, oligarchs, and politics for ruining the world and our inner child dreams.