Lord Kṛṣṇa and His devotees are both on the transcendental plane; therefore the topics of Lord Kṛṣṇa and of His pure devotees are equally good. The Battle of Kurukṣetra is full of politics and diplomacy, but because the topics are related with Lord Kṛṣṇa, the Bhagavad-gītā is therefore adored all over the world. There is no need to eradicate politics, economics, sociology, etc., which are mundane to the mundaners. To a pure devotee, who is actually related with the Lord, such mundane things are transcendental if dovetailed with the Lord or with His pure devotees. We have heard and talked about the activities of the Pāṇḍavas, and we now are dealing with the topics of Mahārāja Parīkṣit, but because all these topics are related to the Lord Śrī Kṛṣṇa, they are all transcendental, and pure devotees have great interest in hearing them. We have already discussed this matter in connection with the prayers of Bhīṣmadeva.
Our duration of life is not very long, and there is no certainty of when we shall be ordered to leave everything for the next stage. Thus it is our duty to see that not a moment of our life is wasted in topics which are not related with Lord Kṛṣṇa. Any topic, however pleasant, is not worth hearing if it is devoid of its relation to Kṛṣṇa.
The spiritual planet, Goloka Vṛndāvana, the eternal abode of Lord Kṛṣṇa, is shaped like the whorl of a lotus flower. Even when the Lord descends to any one of the mundane planets, He does so by manifesting His own abode as it is. Thus His feet remain always on the same big whorl of the lotus flower. His feet are also as beautiful as the lotus flower. Therefore it is said that Lord Kṛṣṇa has lotus feet.
A living being is eternal by constitution. He is, so to speak, in the whirlpool of birth and death due to his contact with material energy. Freed from such material energy, a living entity is liberated and is eligible to return home, back to Godhead. Those who want to live forever without changing their material bodies should not waste valuable time with topics other than those relating to Lord Kṛṣṇa and His devotees.