The defeat of Omega Shenron taught Goku a painful lesson. As the last of his worldly energy faded from existence, he made a final request to Vegeta.
"Take Pan to the time chamber. The world's in her hands now."
"This theory of yours better work, Kakarot. She may be a hybrid, but she's still a child."
"Don't worry. She still has the heart of a saiyan."
"Hmph."
With his final peace spoken, Goku vanished into the clouds, never to be seen by his friends or family again...