Honestly, no one really wanted to leave the base, even after Langit's death. They're just trying to repair every damaged area, every existing village, and every house that has to be rebuilt. Because of the disaster, they started to focus on that area while waiting for clear news about the state of Wiralaya.
In that long period of time, unknowingly, everyone continued to increase their busyness to escape the deep sorrow and to acknowledge the fact that the person who had been keeping them in that place, the person who provided so much information and helped them so much, was now dead.
That's all they can do to escape from the shackles of grief.
