I would like to put this out there... If you are a ff11 player... I'm sure you recall a time when you were standing in a zone of tough mobs staring across the zone wishing there was an easier way to get over there, when out of nowhere some high level person showed up and gave you a "follow me" and escorted you through, safe and sound, to the other side. Now if you played XI you know why players went out of their way to help others... if not, let me explain.
FFXI was HARD! going against something of the same level was almost always suicide, and those who had earned their stripes by winning every hard fought battle understood the struggles of people at lower levels. The difficulty created something I've never seen in another mmo. A camaraderie forged though the beatings and satisfying victories. Many people, after leveling up a ways, eventually returned to those places that had once been nightmares, like long lost guardians. I myself took my redmage back to the deserts around selbina and helped poor groups that pulled an extra mob or had started failing cause the healer had DC'd.
The challenge posed by XI brought the players together. Every fight, even against regular monsters felt satisfying because you knew there was a chance you weren't going to make and you would lose some xp when you fell in battle. Most mmo's these days are mso's, Massively singleplayer online games. Grouping only needed for the most advanced content which was all optional because the stories in those games are forgettable and generic. But this... this is Final Fantasy... Story is what we come for, struggle against insurmountable odds is what we expect, the sting of loss and elation of victory are our bread and butter. This is Final Fantasy...