What if he decided nonetheless to stay in Hell forever as self-punishment for causing his father's death and no one could convince him otherwise?On his way back to dragon Ball hell he wakes up and sees the Eternal Dragon who tells them that the universe's biggest threat is about to unfold and there will never be anything else bigger or stronger than this threat.
They're assholes, they'd wish him back even after refusing to Shenron because of plot.What if he decided nonetheless to stay in Hell forever as self-punishment for causing his father's death and no one could convince him otherwise?
Suppose that, right after Cell Saga, Gohan, unable to take the remorse, kills himself. They bring him back with the Dragon Balls, but he kills himself again. He asks Yenma to send him to Hell, because he believes that's his fair punishment for causing his father's death. What happens next?They're assholes, they'd wish him back even after refusing to Shenron because of plot.
If he somehow sat out most of Buu the dragon brings him back because of "victims of buu.". It takes the fans at least ten years to catch that this doesn't make sense.