Great post! However imho the spiritual realm is real and death is necessary. Life extension up to a thousand years would only make sense if we could experience on a galactic if not universal level, but we're meant to cross over to a non material existence. This place is only here for the experience of the material and to learn from. In most aspects this place is not even real, especially our ego.
Great post though and I do look forward to see what science and technology has in store.