@Alexandergreat3,
In this case we (and everything in this universe) will exist forever in some form of another. We will become an atom, a planet, a galaxy, an every possible combination of particles (an even ... singularity?) hence sometimes a living thing again, and we'll be born and die, be born and die forever in the bodies of all possible living creatutes in all possible words. I will become him, he will become me. And there is no way out.
But only if nothing cannot be destroyed completely (Theoretically we could destroy a quantum system by creating it's full negated copy or by isolating it completely from the rest of the world). What about the virtual photons that are created and destroyed all the time? What if we will become one of them?