It is also important to note 'where' you are adding the five years. An additional five years of infirmity at the end of life? Pass. An additional five years

It is also important to note 'where' you are adding the five years. An additional five years of infirmity at the end of life? Pass. An additional five years of relatively healthy mid-60s? Sign me up. Extending lifespan is less useful than extending the healthy/active part of the lifespan. Like reading the fine print on the side of the packaging or the bottom of the contract, you need to pay attention to the details. This is why lifestyle changes tend to be more important than pills which treat conditions that used to kill our parents or grandparents, the former usually increase the odds you will still be walking around and taking care of yourself in your late 80s while the latter might just mean that you add five years to the amount of time that some nursing home will drain your estate while you are bed-ridden in some warehouse for the elderly.