Leonid Gavrilov (noted for the reliability theory of aging) discusses the future at the Science Advisory Board. "Did you ever wonder how long will you be around and able to enjoy life? Or are you assuming that this question is irrelevant because you are not old? What do you think about the promise of forthcoming life extension offered by some scientists? Or perhaps you have more trust in an advanced discount-offer from your local funeral director? ... Pessimistic forecasts are usually flawed because of one hidden assumption [that] tomorrow will be more or less similar to what we have today. ... it is fundamentally flawed when applied to the progress in human knowledge and technology." You might find his Longevity Meme article on aging research and attitudes within the scientific community to be interesting as well.
Link: http://www.scienceboard.net/community/perspectives.125.html