Immortality
Insurance actuaries have calculated that even if everyone were physically immortal, the average life span would still be only be 400 years because of the accident rate; eventually, everyone would die of a fatal accident and it would be very unusual to encounter anyone more than 800 years old.  Therefore,physical or biological immortality is better termed indefinite life extension or anti-aging technology and it would seem that the only practical ways to achieve actual immortality is to upload one's mind into a supercomputer to live in virtual reality, or become a cyborg with a nearly indestructible and invincible body.  Futurists such as Ray Kurzweil believe this will become possible about the year 2045 in the technological singularity.