WHERE DO WE GO WHEN WE ARE ALL BY OURSELVES???

Where do we go when we are all by ourselves..?

Where do we come from,
And where do we return to, after this mother earth?
The atheist says God does not exist and the theist believes on the contrary.
Where does man comes from and where does he return after mother earth.??

Pls I need to know cos this broken piece of man is helpless.
Pls i need to know...