The idea of "living forever" is a tempting one to most of us, but I would like to see physicians and scientists work on extending a high quality of life into later years rather than focusing on duration.
Would you rather be a senile 200-year-old who is stuck in bed all day? Or be 80 years old and still just as physically and mentally "youthful" as a young adult?
I already have grand parents who are as whip quick as a young adult. I'd love to see that stretched to 200 :-)