Are you trying to argue for or against your own point there?
It all boils down to how you define the benevolent qualities of God. And it's not totally clear cut.
God could be actively absolutely benevolent, and do everything in his power to prevent misery. This would imply that if God exists, misery can't.
God could be passively benevolent, in that people who direct pray/ask for misery to be removed will entice God to remove it, but misery will still remain in other places.
God could also have a different look on what it means to be benevolent, or what misery means, than we do.
The first definition is, by definition, incompatible with our current universe.