Good question :) I think it's likely that in the coming years we will develop a few tricks ourselves to prolong our lifespan but I guess solving one problem will lead to another, for example in the last few years while we increased the life-expectancy of people we have seen the gap between people in need of an organ transplant and organ donors widening, more people need blood transfusions and fewer people are fit to donate it. So I think the efforts should not be directed only at living longer but at living better as well..