Nice. There are a few instances of this online, but you could (should) extend it by adding country, gender etc to give a more accurate and sense of foreboding mortality.
The average life expectancy varies dramatically by country and circumstances - There is no way on this rock that I'll make it to 90!
That's a nice idea, and I personally feel there are chances we can make it to a 90 given that we take our health and diet more seriously. But I get your point.