A serious voyager is not afraid of punishments in hell or is not greedy of pleasures in the heaven.
Such threats and attractions are not enough to move a strong person. Krishna does not give any such example to move Arjun.
Krishna ridicules Arjun by calling him a “Eunuch” had he not participated in the battle. Krishna dents the self-respect of Arjun and suggests that he would be filled with Shame had he not agreed for the battle.
In the explanation about rebirth, Miteiya makes this point clearer. Miteiya builds upon the concept of 2 gold cups and 2 silver cups as mentioned in the Quran. He also refers towards Fravashi and Urvan of Persian myths. With these examples, Miteiya re-emphasizes the concept of “Elemental Soul and Gross Soul” and “Elemental Wisdom and Gross Wisdom” as explained in Vedanta School of Thoughts. The Gross soul and Gross wisdom decide the fate of the deceased being after the biological death. Had the gross wisdom and gross soul was engrossed with basic instincts like Sexual Urge, Intoxication, Hunger, Sleep and Thirst; it would force a rebirth accordingly.
The elemental soul and elemental wisdom are virtue-less but are entrapped with the gross soul and gross wisdom. Having entrapped in the cycle of “life and death” in spite of the fact that liberation was possible is “Shameful”. Shying away from action is disgust. Epic of Mahabharata suggests that Pandu was not allowed to sit in the heaven because he did not do anything worth doing in his lifetime. Such souls are filled with shame and disgust. This shame and disgust is the perpetual pain.