Well FFX comes to my mind immediately as it is one of my most beloved games ever, I actually just finished getting the plat trophy on steam for it few days ago, which I have actually done a few times already (plat on vita; defeating all superbosses, Penance included, finishing the whole sphere grid for all chars, getting all overdrives and getting the celestial weapons like 3 times on PS2 and 1 time on PC emulator, etc.).

And while I just cannot get myself into FFX-2, I still can dig the story somewhat.

However what would have ruined the whole series for me if I accepted it would be the novel or whatever it was, that came after FFX-2.

I mean, seriously? Sin reborned so whole FFX ruined, Tidus dying due to angry kicking bomb dressed up as blitzball, after breaking with Yuna, thus ruining the whole FFX-2? For Fs sake...