I have no way to answer that because I can’t prove or disprove Nirvana. If Nirvana already existed, what was the point of creating man to go to Nirvana. Why not just side step the whole process and create the essence of man instead of the whole man? And then just go ahead and send the essence of man to Nirvana.
If the side stepping of the process of the “whole man” experience, for the expediency of the “essence of man” experience of Nirvana existed, Nirvana, would not have any relative meaning.
For all we know, this current Human condition could be that Nirvana.
“If Nirvana already existed, what was the point of creating man to go to Nirvana. Why not just side step the whole process and create the essence of man instead of the whole man? And then just go ahead and send the essence of man to Nirvana.”
Man was not created to go to Nirvana. Nirvana or Heaven is a place where “the essence of man” or his spirit goes after his mortal existence is over. Man’s spirit inhabits his body as a baby, and upon one’s death, it moves on to a more perfect place that some call Heaven and others may call Nirvana. our existence on this earth as a mortal is a period of growth and learning for our spirit as we continue on our continuum of immortality.