Ad multos annos--and then some.
A very interesting, if sci-fi-ish, look at the potential impact of life-extending technologies on the Papacy (and other institutions).
Though I am reminded that eternal life without God is the very definition of Hell itself....
Thought-provoking stuff, to be sure. It reminds me of a short story contained in the long-out-of-print anthology, The Last Man on Earth, in which the protagonist discovers a serum for immortality. The only side effect is the complete loss of the emotions and indeed, the ability to form attachments with human beings at all. It's a trade he's willing to make, but learns quickly of the cost.
Likewise this--I wonder if such technology might not end in perpetual madness. Our frames simply were not built for this sort of thing--at least not in their current forms.