I'm level 5, and am not sure what the fuss is about. I'm gonna keep going because I think I may have picked a boring story class (Republic Consular), but I was expecting tight, instanced corridors with only a handful of players on your "channel." Instead, it's like recess, with dozens of people crowded around quest NPC's, having these deep one-on-one conversations that I just can't take seriously.
It's just weird so far. I told myself that I'll play this game for a few days every time my anima/leves run out in FF14, but I'm liking everything in FF14 better so far. Unfair to say this early, but I said it anyway.