For me, this would have to be The Last Remnant, I mean, it seems like it probably has a decent story, but the battle system was just so atrocious. Every random battle you got into took like ten full minutes and up to complete. I wanted to go out and grind to level up my characters but it just would've taken forever. I'm good with grinding for a few hours, but that's about all I can take, because I want to see the rest of the story, which is my main concern with a video game. But it would probably take me a few days to grind to a certain level in The Last Remnant where as any other RPG it would only take a few hours to get to the same level. So, I ended up dropping the game about 1/4-1/3 of the way in and trading it in at GameStop.
How about you folks, what is your answer to the title question?