> I'm also not bringing in the issue of
>religion. For some who think there is something
>better beyond this world, why would they want to
>stay any longer than natural? But that is
>another thread/can of worms.

The logical (?) conclusion I come to when thinking about this is that religions, or at least religions that believe in a better world or better existence after this one would eventually die out in a world with immortality, because all the practitioners of said religions would let themselves die leaving only the non-believers to accept physical immortality.

-- Dave