A game you "didn't know it was bad 'til people told you so"?
I'm talking about games that you still like but you had no idea were criticized so much.
The perfect example for me is Sonic Unleashed.
I admit that the game has its bad things, but I would have never imagined that it was so hated at the time... Although, that could be extended to the entire Sonic franchise, since for many years I was not aware at all of that "Sonic was never good", "Sonic had a rough transition to 3D" nonsense.
How old were you when you played Sonic Unleashed? I thoroughly played and enjoyed Sonic Adventure 2 for the Gamecube when I was in middle school, but revisiting it as an adult, it was so hard to envision how I ever enjoyed the way that game controls. However, even though my muscle memory was totally gone, since all the levels I knew from SA2 were remixed, Sonic Generations was good even as an adult.