Why? I really enjoyed X. VII, VIII and IX, loved them all. X-2 was decent, for a half price game, no more. Had a few good moments, and had some utterly cringeworthy moments. The wheels came off for me at XII. Square-Enix is a joke today. I'm just wondering what could make you ditch it in an hour. XII lasted at least 8 hours with me I'd say before I dumped it.
I put about 200 hours into FFX. It is many things, a good game it is not (and the reason why I put so many hours into it has more to do with a friendly rivalry a mate and I had going at the time, and my desire to beat the black Eidolons).
It's a game that is hampered by an unlikable main character who spends a lot of time in the early game being completely and utterly
stupid, whose insistence that "this is my story" gets all the more irritating the more you realize that he's pretty much just a bloody plot device! You have a story that has various characters picking up idiot balls left and right, you have minigames that run the gamut from utterly disappointing (Blitzball is so ****ing cool in the intro! I can't wait to play it! Only when you do get to play it, it's utterly simplistic and easily broken) to way too ****ing random (Remember Chocobo riding?), and all of these have to be played to have a shot at the best weapons in the game.
FFX, while not the worst in the series (THAT honor is reserved for the endless tunnel of doom called FF13), is still pretty dire. It had the potential to be really really good (And I will say that at least on a technical level, it is a remarkable achievement), but it ultimately disappointed.
X-2, while also not exactly good, at least had the decency to not take itself seriously, and it had the balls to include a couple rather *****in' Jpop tracks. Again, it could have been much better on a writing level, and it could have found a better narrative structure, but at least Yuna and her crew are more fun to be around than the idiot you had to guide around in X.
FF12, on the other hand, I found magnificent. It had a consistency of style and tone that its immediate predecessors lacked, and while Vaan was a bad choice for protagonist (Basch was a much better choice, honestly), it had a cool combat system that encouraged tinkering, and it avoided at least some of the grindiness of FFX. It also had a reasonably open world to play with, lots of room for exploration and sidequests. It also had a villain who actually had a reasonable reason to act the way he did, and it managed to make it somewhat ambiguous as to who the actual villains of the piece are.
Also, it is possibly the prettiest game on the PS2.