Even when Light Is Good, it can still be too hot to handle. Maybe holiness is judgment untempered by mercy, and only the most incorruptible people can come in contact with it and come away unscathed. Maybe it's really temperamental, and objects violently to being used for any but the most noble causes. Maybe it's just that light burns, and enough holiness in one place is naturally dangerous to anyone, not just the wicked. In any event, you'll probably rest easier with some safe distance.