Zero traffic would mean it’s an empty lot. If there’s a curb or cement blocks preventing pull through, I’d still back into a spot.

But to answer the spirit of your question, it’s easier to back in to a confined spot due to the steering being on the “back” side and ability to use the side mirrors to line it up. Other than pull through spots, I can’t think of a single good reason to pull in to a parking spot forwards rather than back in.