This is actually an interesting question to me. XI continues because of a lot of reasons, and even now I would probably play it on the side if time allowed. Even as much as things have been sped up in XI, it still has a lot of very long-term goals you can engage in. XIV is a much different critter though. Strictly theme-parky. At the point where all story content is done, and all the fights cleared at least once for the hell of it, I would have no reason to keep playing this game in the face of a fresh FF MMO.