@winglynd:
1) the people farming FATE don't do that for be in group, they group simply because they will get more credit leading them to get gold... you will rarely be healed by the healer or protected by a tank.

2) when people log and band together only for run from FATE to FATE, is not spontaneous, is simply a farming.

other point, it's ruin the game actually, some area like coerthas and north thanalan are simply horrible because of the train, if you want to be spontaneous is impossible, since the zerg will destroyed the fate before even be able to do anything.
the trouble is not the fact that people only use FATE, it's the fact... that the FATE are the only way, after you did get your first jobs to 50... to level up another jobs efficiently.
worst, it's impossible to do FATE without being grouped (the boss one mostly), making impossible to queue for the dungeon.

the FATE system is good, the use the community do with it is horrible and that a huge trouble.