I actually liked X-2. I wasn't really expecting that much from it, though. I wasn't expecting a good story, cause I thought they made it for fun, and for the fans of X so they would have more stuff to do in Spira. (Since it was a pretty cool world) I liked the gameplay, and I liked the dressphere system. I wish you could have changed jobs in V in the middle of battle!
I think most people bash it because of the story and its not exactly like all the other FFs. But its really not part of the main series so thats to be expected. Its still a fun game, for me at least.