If you desire to go to the planetary systems of the demigods, you can go. If you want to remain here, in this Bhūrloka, Bhuvarloka, you can remain. If you want to go to the Pitṛlokas... Just like according to our Vedic system, there is pitṛ-tarpaṇa. You know, all. By offering pitṛ-tarpaṇa, you can be promoted to the Pitṛloka. This is the idea. Similarly, if you want to go to the Supreme Planet, yad gatvā na nivartante (BG 15.6), the abode of the Supreme Lord, Goloka Vṛndāvana or Vaikuṇṭhaloka, you can go. So if we want actually promotion of life, I mean to say, established life, eternal life, and eternal body, sac-cid-ānanda, and eternal blissful life of knowledge, then you must worship Kṛṣṇa. That is the verdict.
Therefore Kṛṣṇa says, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66). This is the mission of Bhagavad-gītā. The best chance. And Kṛṣṇa comes here to give you the idea what is the function of the Kṛṣṇaloka. That He displays in Vṛndāvana here. Rādhā-mādhava kuñja-vihārī. That is His business, simple life, village life. They're all young boys and girls, the gopīs and the cowherds boy. They're enjoying, dancing. Lakṣmī-sahasra-śata-sambhrama-sevyamānaṁ surabhīr abhipālayantam (Bs. 5.29). And Kṛṣṇa, just like we have got some hobbies, we keep some cats and dogs, Kṛṣṇa has got also hobby. What is that? Surabhīr abhipālayantam (Bs. 5.29). He's always engaged in taking care of the surabhī cows. Gopāla. That is His business. So He's so simple, life.
So the difficulty is the people cannot understand these things. They are of opinion that after this life, everything's finished. The greatest scientists, philosophers, they are thinking like that. That means practically they have no sense. Why there is no life after death? I am experiencing that I was a baby, and after that baby body is finished, I got a body of child. Then, from child body, I got the body of a boy; then as a young man, then I have got this... Now, why not after changing this body, another body? Where is the reason? In my this experience I get that I have changed so many bodies. But I remember. I am existing. Although my different bodies are finished, I am existing. Similarly, tathā dehāntara-prāptir dhīras tatra na muhyati (BG 2.13). Similarly, I shall get another body. So what kind of body I shall get, that is the preparation stage in this life. What kind of body I'm going to get. That is karmaṇā daiva-netreṇa jantur deha upapatti (SB 3.31.1). As you are working here, this is a chance, human body. Here is a chance. You can make your next body as lower animals, or demigods, or go back to home to Godhead. Whatever you like. Yānti deva-vratā devān pitṟn yānti pitṛ-vratāḥ (BG 9.25). These are the instructions of Bhagavad-gītā.
So one has to understand all these things by little tapasya. Because to go back to home, back go Godhead is not very easy thing. Because we are so much entangled with this gross material body and subtle material body. And the subtle material body is creating... Just like a spool, creating another body, another body, desires. Material desires. So we have to change these material desires into spiritual desires. Then we get spiritual body.