I just lost thirty hours of progress in Persona 4. I died, went back to the main menu, loaded up my save files, and my latest save file had inexplicably vanished.
I had made a back-up save file much earlier in the game (roughly 15 hours in, whereas my save file was at 45 hours or so), so I'm not starting from scratch, but I might as well be. I'd have to replay three dungeons (including the extremely awkward "strip club dungeon" - no idea what they were thinking there, given the ages of the characters involved), redo a TON of social link stuff (including maxing out four of my social stats, getting four party members to rank 10, getting Dojima and Nanako to rank 10, and doing a bunch of Persona fusions and fox sidequests), and hope that luck works out in my favour for the boss fights, because some of them (especially the boss of the fourth dungeon) were frustrating and largely based on me being lucky enough that the AI didn't happen to use two specific moves in a row.
If I had pirated the game, I'd understand why this happened, but I'm playing the official download from the Playstation store. I'm not sure whether I should restart the entire game at this point or try to pick up where I left off. It's just frustrating - I was really enjoying the game, I was interested to see where it was going, I felt like I was near the end, and then this happened.