some prefer non stop as it saves time
others prefer stop over after 6 or 7 hrs flight to alight n stretch take a stroll on other airports
I think it depends on whether the individual can tahan 14 hrs non stop flight or not.
14 hrs is ok lah. Just sleep for a few hrs, watch 2 to 3 movies, it's almost there already.
If longer than that, I'd stopover at hk, tw, sh or bj for a few says
If you're on business or first class then 14 hrs non-stop is ok.