[Nyororin]

I usually fly Tokyo to Nagoya, even though it is even closer than Osaka and the Shinkansen is "convenient".

There is no lugging around of luggage, no dealing with stations, no messing with finding a spot to store the luggage on the Shinkansen, and no extra cost.
I have always found that booking flights with the stop over no different in price than just going to Narita. So it seems a complete and total waste to me to get off in Narita, deal with the whole drag-luggage-to-train thing... And then pay an extra 10,000 something to take the train.
Especially when I am feeling like crap after a long international flight.