Heading to Japan… But first lets fly a bit!

It's 2023 and its time to embark on my first adventure of the year. Ultimately my final destination is Japan, but I have a few "hoops" to "fly" through before I arrive. Being a bit of a plane geek. My itinerary consists of a roundabout way to Asia. This is because I have a Singapore Airlines flight from New York's JFK airport to Singapore. Why would I fly this when there is a direct flight from...