If a tree falls in the wood and no one hears it does it make a sound? no. becasue sound is the vibration of air against the eardrum so if there's no ear to hear the sound then the sound doesn't exist.

the same goes for humans. we're born, we live, we die, we get forgotten. do we really exist at all? what is there of us when we die? Many say children but is that really all the legacy we'll leave? a few kids that will just make more kids until the end of the world? Is humanity just the plague that's killing the planet?