Im confused why people keep comparing FFXIV to single player games, its an entirely different genre and makes no sense whatsoever. SP loss gives a feeling of danger when your about to die and many people like that, it can be very fulfilling to narrowly escape death, but you dont quite care if all you lose from dying is a 30 second walk back. Im not sure if its a good idea for this game, but you should at least see WHY other people think it adds another element to the game.
FFXIV is an mmo, it follows much different rules than single player final fantasys and you shouldnt expect the same thing from an entirely different genre. Its like saying you should get an M16 in FFXIV because you can obtain those in COD and that games fun!