Stats say you probably will anyway, considering the way our longevity is increasing, by the time you make it to what is currently the average lifespan (77 for men, 82 for women, if you’re in the US) (http://en.wikipedia.org/wiki/List_of_countries_by_life_expectancy)
It has increased significantly (about 11 years since the 50s) just since your grandfather was the age you are now (whatever that may be). So by the time you reach the current average lifespan it will already have increased significantly again… all things being equal, of course…
Example: http://www.inequalitywatch.eu/spip.php?article106
