Many experts will tell you that the first person who is going to reach the very mature age of 150 years old, has already been born. Let's say in 2020, that person will be 150 in the year 2170. Society will not be able to cough up the money for keeping people healthy for that long, unless that person is a multi-millionnaire. IMO, within a decade or so we will face the issue that has been brought up half a century ago, in the movie Solylent Green.