Yes I agree with Baalz its not overpowered, simply because its better to kill the enemy, rather than leave them alive with afflictions.
Its really just annoying that the army is a bunch of limping, blind, one arm missing etc... pain filled wrecks.
Still, those pain filled wrecks can go on to conquer provinces, win battles until they finally drop dead...
Also if you have the chalice, GoH, healers etc you can make them as good as new again, if you are playing a caring god that is.