I understand what your saying, its just your theory cannot be applied to humans as it is based around no proof.

If I shot you the matter or energy you are made of is obviously still going to be what we would call "alive".

Matter cannot die from a gun wound and yes matter cannot be destroyed full stop but if I took your conscious from you then what is left?

Without your awareness and thought and the ability to think you are dead.

I think therefore I am.

Nirvana is escape from everything. Including the concept of escape and the concept of everything.

And the concept of concepts
And also obviously, escape from nirvana?

So the objective is to basically 'not exist?'

The point of existence is to not exist.