>As we can
>see in the present, by technologically changing this dynamic, we are
>risking our species survival because we are all living too long, and too
>many of our children are surviving to reproduce...
Our species survival isn't threatened in the least. In almost any major
worldwide catastrophe, we would be the last large mammal to go. Several of
the other last-ditch survivors, like rats and cockroaches, are parasites on
our society. It's the survival of species that don't have roles in
human-dominated ecosystem which is threatened by human population growth.