A scientist, Ray Kurzweil, predicts that immortality could be possible in 20 years, in his new book, "Fantastic Voyage: Live Long Enough to Live Forever." (didn't read it, should I first before I post?). Anyway, he proposes the following question to philosophers: Why are eternal lives worth living? I suppose my first though is "why is any life worth living?". I'm not a nihilist. But would I want to live like "highlander" in that movie? Well, in reality it wouldn't be like highlander. More age, in my view would just bring up "new" health problems we've never seen before: Alzheimer's disease was unknown until we started living long enough for it to be expressed in the population. Same dif with living 125, 150, 200 years: something new would express itself, something like "inflammation of the nanobots" or whatever. Suppose for the sake of argument, we ignore these things. Why live forever?