I like a lot of things, but the community is the biggest one. I know it varies from server to server, but I honestly have never felt so welcome as a new player before (First MMO, First PC game). If I KOed on fates, a passing SCH/WHM would throw a res. I made the mistake of using a Fire II on a mob in Central Thanalan, and ran screaming while wasps tried to murder me, some random Monk ran over and killed them before I died. And my first run of Satasha I got this really sweet PLD that walked me through how dungeons work, and the bosses and everything (I now know this is not typical behavior, and usually you get speedrun tanks that ignore everyone because Satasha is so easy and no one seems to like it lol).

Anyway, it left an impression, and I've since made a lot of good friends through this game.