also, the community.
you can absolutely screw up, and nobody gets mad at you. real talk, first time I did Ifrit, me and a couple people in the instance didn't know you had to attack the nail. we wiped 3 times, and nobody got mad. they calmly let us know to attack the nail. next try, we got through it.
and this game feels rewarding for being a new player or a long time one. like, when I tried getting into WoW, I felt like I was left in the dust from the start, but in this game, it feels like I'm gonna be able to catch up with everybody in it. it's really hard to explain.