To be brutally honest, nothing lasts eternal (except God if you believe in one). No matter how hard we try, we will end too and so would the world and the sun and the solar system, and the Galaxy. Maybe the universe itself will end by collapsing.... And surely everyday we are nearing to that inevitable event because nature doesn't care what you think about it. It goes on its own ways and thinking

You are talking about
Existential nihilism.

EVERYTHING we do will eventually atrophy.
But the world itself is not ending at this time. Minor population adjustment.
even if it is - its only for other species to kick it in and get all the goods in this evolutionary race