what is the purpose of human form of life?

But this human form of life gives us a chance to return home back to godhead. Side by side we know the material world and we know the spiritual world. So in this kali yuga it is prescribed that one chant HARE KRSNA! (Hare Krsna Hare Krsna Krsna Krsna Hare Hare Hare...