Other source:
With Cell defeated, the Z Fighters head to the lookout to summon the dragon. This dragon is able to grant two wishes, but unfortunately can't bring Goku back because he's already been brought back. Although they think of a way to revive him, Goku suddenly speaks to all of them through King Kai. He says that all of the trouble that has been caused on Earth is because of him. Frieza, the Androids, and Cell were all after him. He seems to be a magnet for trouble, so he decides to remain in the Other World. Now they have one more wish left.
