Earthquakes have no free will.
The objection, in full
The free-will defense, even granted, only covers moral evil — what humans do to each other. It says nothing about the tsunami, the cancer cell, the child born with a genetic disease that kills her at four. No one chose these. They are built into the fabric of the world an omnipotent, omniscient, perfectly good creator chose to make.
If a good God made the world, why has it gone wrong?
or, in plain terms —Earthquakes and cancer aren't anyone's fault. So why does God allow them?
Creation groans because creation fell.
The world as it is is not the world as it was made. Scripture's witness is consistent: the disorder we observe in nature — the predation, the disease, the seismic violence — is not the original creation but the fallen one. Creation itself will be set free from its bondage to corruption, says Paul; it is in bondage now, and was not always.
How a moral fall produced a physical disorder is mysterious, and I will not pretend to map it. But the intuition that something is wrong with the world is not an argument against God. It is the most basic Christian claim. The atheist's complaint — that the world is broken — is exactly what we have been telling him for two thousand years.
The question is not whether the world is broken. It is whether it can be healed, and by whom.