This is an interesting question, Tina. It is very relevant to most Money readers – if not for themselves, for their family and friends. So, let's start with the big picture.
Life expectancy is a key factor. We all know that on average we are living longer. But I am pretty sure many do not know how dramatic this is. We only need to go back about 160 years to the 1860s and we find that life expectancy, even in the longest-living countries, was younger than 40 for women and worse for
