When your papers get graded down because of sentences that end in prepositions, there was, at least in 1 point in time in 1 middle school in Ohio, a rule. Mrs. Jaquith was a stickler about that, and taught us the squirrel test for finding prepositions. The squirrel ran ____ the tree. If the word fits in the blank, it's a preposition. I've been pretty busy in the intervening decades, so I admit I haven't been as vigilant as she might prefer, but I haven't encountered any exceptions to the squirrel test. I don't care how people structure their sentences, just adding to the discussion.
I invite everyone to choose your fav. version from 3 sentences about the preposition discussion that contain the silly sounding word, "quibble":
I agree that it's not something over which people should quibble.
I agree that the subject does not warrant quibbling.
Such trivial matters are, as said, not worthy of quibbles.
