Always figured the ability to self-repair gear was a "Bonus" reward for leveling a crafting class? (the norm reward being the ability to craft stuff u normally would have to buy in some way). thou I am not against players able to repair other players gear as long as 1 has the mats for it & there is no gil cost, like self-repairing (but thats my personal opinion)
any back to killing enemy npc's for various reasons, good day.