See, I disagree with that. Saying "violence is never the best option unless metaphysical beings are involved" has never never kosher to me.
Firstly, there's the obvious difficulty of hitting a metaphysical being with a chainsaw. It can be done, but...the blade needs to be made of salt, or something. Or coated in the oil used to fry Captain D's fish (which is surely a holy substance).
Secondly, can anyone honestly claim that violence is *never* the best option? What if some kid is getting pummeled and the aggressor can be stopped with a simple punch, but no amount of talking will stop him in time?
Suppose a long argument would end a friendship forever, but a nice street fight would have the two parties laughing and buddies after a few minutes?
What if your annoying brother is going after the final donut-bacon-burger, and only a remote flung at his head can stop his greedy rampage?
That's like claiming "underpants can only be made of spandex".