I see. It is not entirely dissimilar from some forms of warfare with which I am familiar, though I would call them more... Particular, I suppose. My kind is functionally immortal as well, and we are not without our own conflicts.

[ War between demons was a chore, really. It was an endless churn of souls and legions of demons, and for little practical gain, since actually killing anyone powerful enough to start such a conflict was difficult. It's why he had tired of it and turned to contracts with mortals instead... ]

If you will pardon my asking, why is conversion preferable to destruction? Are Aions too rare to be replenished?