In FF X-2’s case, given the true ending can’t be unlocked until you play the game at least twice, I’m not at all surprised that people play and replay it.
I played the game half a dozen times, took we quite a while to get some of the items and Dress Spheres. It was well worth it though.
FFX-2 is a very rich game that will pay dividends if you take the time to explore it thoroughly, though. Try different options for things like the Mi’ihen Investigation, playing around with the CommSpheres, getting Episode Completes vs. Concludeds, etc. Oh, and if you’re tired of a particular scene or dialogue, don’t be afraid to skip it.
For Final Fantasy X-2, I played it once. I unlocked New Game+, but I never managed to get all the Crimson Spheres, Sphere Grids, or even get pass Cloister 30 of Via Infinito. In fact, I chose the Youth League hoping to get 100% completion, yet to score below 70%. However, due to the fact that the saved game was on the same memory card as FFX, its also gone. Luckily, I managed to transfer another person’s saved game with New Game+ unlocked and so, once I beat FFX. I will play New Game+ in FFX-2!! 🙂