There are a lot of reasons for it.
  • We don't choose a side (such as a grand company) and fight the other grand company. They are all friends.
  • Required content is easy and has no enrage.
  • One good player can carry the entire group in required content.
  • The are no DPS trackers in the game so most people don't use them and judge eachother.
  • You get rewarded with tomestones, experience or WT second chance points when it's someone's first time. It benefits you to have a person who doesn't know what they are doing.
  • There is a commendation system which makes you think about what each party member did well, instead of what they did wrong.
  • There is a sprout and returner icon, which instantly explains why someone doesn't know what they are doing. They also view cut scenes on their first time.
  • You can actually report rude behaviour.
  • The game appeals to a wider variety of people, including casuals and people who have never played an MMO so they are not coming into the game with this endgame high-DPS focus.