I am not sure about what it means to die. We are a loose collection of particles that no one has ever seen directly. Even our best theories indicate that the existence of those particles is more probability than certainty. It has been estimated that the half life of the proton is 1045 years, so relative to human time scales, the atoms are "immortal".
There is also growing evidence that matter has a low level, rudimentary consciousness. There is even a line of scientific inquiry that says that if man has free will, we get it from the matter of which we are composed.
So, in that context, it might be fair to say that my body never dies. I am at one with the universe. There is no "there" out there.
I also have at least one friend who says that I am a non-dualist. Dualism is to suggest that there is a distinction between the self and everything else. As far as I can tell, there is not. Quantum entanglement is proof enough for me that we are all connected.
Everything has a beginning and end. As far as I know, the question of whether or not that end is death, the answer to which is entirely subjective until a scientific consensus can be reached otherwise.
RE: I don't know, a sort of philosophy