A
metaphor is not disposable!
A metaphor is not an object of decision. It is not something that is picked and chosen because of something, possibly ineffable, about it.
A metaphor presents itself as some concrete thing, or possibly some concrete nothing, so strongly so undeniably, our way of looking at the world is forever altered because of it.
Those lucky, or unlucky enough to find these things lying serendipidously around them are merely the vessels of the illumination that metaphor provides. And if they are talented enough, or cursed enough, we all see what they see.
And even if we are never directly privy to their vision, our world is nevertheless forever changed because of it.