What a minute... so we're harvesting souls to use against the daimons... are we The Light? 
No no. The Light used up souls as fuel for their weapons. We ask the honoured spirits of our ancestors to take up residence in temples and shrines to defend us if need be. It's like the difference between "volunteer" soldiers on the Eastern Front of WWII and the sailors of the US Navy who took up station in beautiful Hawaii to scare off those nasty Japanese.
