The Ultimate Vampire Resource and Directory

It is written that classic battle between good verses evil constantly continues. Angels v.s. demons. However it is said there is a certain number of both. It never increases never decreases. There for a war where nothing dies or demenishes. How then is it a taught subject of study by the catholic church and many seminary colleges, is just a battle where nothing dies deminishes or ceases to exist. How is this a battle or a war at all. Wheres the conclusion, the great end. More importantly whats the point? I have now lost all interest in this feild of study.