Because existence exists, and the conservation of energy is irreducible, we have to confront a couple of entailments about nothingness.
Either the Universe came from Nothing, in which case Nothing isn't Nothing as we understand it -- instead, the Void may as well be the Goddess, an infinitely powerful Creative force. I'm not convinced.
Or, and this makes more sense, there never was a Nothing, and there never will be.
Which rather puts Death into a precarious position.