Yeah–if you can write clear prose, writing sentences that godawful is really hard.
Take the example sentence, which I’m going to try to dissect here:
"Quickly and with great urgency but also incredulous to find himself, out of a clear blue sky, to be abruptly worried for the very life of his wife, Gil lifted Robin from the seat to place her on the ground just beyond the shoulder of the road. "
Quick rewrite:
The word “lifted,” in the original sentence, is modified with two adverbs (well, an adverb and an adverbial phrase): “Quickly” and “with great urgency.” Each adverb is separated from the verb by more than two dozen words. The adverbs mean basically the same thing here.
“Gil” is modified by the adjective “incredulous.” This adjective is connected to the adverbs with the conjunction “but,” which should only be used to connect similar parts of speech.
“Incredulous” is modified by the adverbial phrase “to find himself.”
“To find himself” is modified by two adverbial phrases: “Out of a clear blue sky” and “to be worried.”
“To be worried” is modified by two adverbs: “abruptly” and “for the life of his wife.”
“Abruptly” and “out of a clear blue sky” have essentially the same meaning.
“Life” is modified by the adverb “very.”
And that’s just up through the first verb in the main clause of the sentence. It doesn’t get into how “to place” is used to modify “lifted” or how nested adverbial phrases are used to modify “to place.”
As I count, the sentence only contains one actual grammatical error–the use of “but” to link an adjective to a couple of adverbs–but it has so many nested adverbial phrases that it’s nearly impossible to read straight through without confusion.