Every human deserves Hell because we're fallen creatures in a world that has been broken by sin. Apart from God's grace and the propitiatory nature of Jesus' death, Hell is simply our natural state of being.
If this is true, then God cannot be both omnipotent and omnibenevolent. Otherwise, there would be no reason for him to accept this “natural” state of affairs and not rescue every human being from Hell.
Not everyone in Hell wants to be rescued nor will appreciate it, and this is without even going into "actions have consequences".