Moving saves isn't the biggest deal. The fact that I can't easily back up my several hundreds hours of gameplay in case something happens to my PS3. Hard drives are very far from indestructible. On every system since the dawn of gaming and up until the current generation, game saves have either been distributed in a way that means that no single hardware failure will destroy every single saved game you have(1). On PS3 this not possible on a significant amount of games, and Sony has the nerve to charge extra for something that should be a basic smurfing functionality.
1) Cartridge based games have saves for each game on the cartridge, meaning the failure of a console will not affect saved games. Consoles with memory cards let you save your games on several memory cards for redundancy in case of save medium failure, and the memory card is also independent of the console. The vast majority of PC games let you simply copy and paste saved games to anywhere you like. PC games that require accounts to log in to and have achievements through those accounts are secured by being stored on the game's servers and these servers always have backups, even the ones that don't force you to pay a monthly fee.