"Spinning is so much cooler than not spinning."An element is included in a work, just because the element makes the story better in some way simply for having it, similar to adding spices and seasonings to food. These elements don't drive the plot or have a narrative purpose, and aren't genre staples. They can add to characterization or World Building, but mostly the point of them is, to paraphrase the above quote, having these elements is so much better than not having these elements. Now even if these elements have some importance to the story, it's similar to a MacGuffin in that the form needn't be any of the elements, but it's still better to have them.
— Puppet General Hammond, Stargate SG-1 episode "200"
A Super Trope to
Other languages can be better.
These animals are so much better than without these animals. Or, depending on the animal, much worse (adds danger and suspense).