Yes, and the Earth will recycle itself after the Sun runs out of hydrogen fuel.
You're completely ignoring time here. We may never get to recycle the landfill because the pollution will kill us before. Yes, the Earth will clean itself up in a thousand years, the plastics will decompose, and the Sun will refuel the Earth, but those things are irrelevant if humanity is dead by that time. If we want to keep rising the standard of living on the entire planet, we need to stop poisoning ourselves and trashing everything around us in such a stupid way.
You're completely ignoring time here. We may never get to recycle the landfill because the pollution will kill us before. Yes, the Earth will clean itself up in a thousand years, the plastics will decompose, and the Sun will refuel the Earth, but those things are irrelevant if humanity is dead by that time. If we want to keep rising the standard of living on the entire planet, we need to stop poisoning ourselves and trashing everything around us in such a stupid way.