I really think that Djura is right in spare the life of the beasts. I mean, the Healing Church never tried to deal with the beast that wasn't "kill or make more bizarre experiments with them." They never hyphotetized that they could heal (ironically) the beasts. The only "heal" they were concerned was for themselves, for they transcend the humanity, while the rest of the people has collapsed in madness. Laurence, Ludwig, Micolash, Lady Maria, Gehrmann, they all didn't care about the people, and yes only with your greed. And in this well of greediness, only Djura saw that the people of Yharnam deserved to be saved, because it was the main viticm of all that insanity, not the villains.