What I do not want to write is didactic political tracts.
Probably I chose immortality because mortality is a universal human obsession.
Archaeology is the anthropology of the past, and science fiction is the anthropology of the future.
For every path you choose, there is another you must abandon, usually forever.
Perhaps the thing that makes humans truly unique on Earth is that we are never satisfied with our situation; maybe that is what's taken us so far.
The ecosystem of our world is a closed system: it would run out of gas, collapse of its own weight.