It seems to me that impact on life expectancy should be considered. For somebody who's very old, a very high mortality rate may represent a fairly small impac

It seems to me that impact on life expectancy should be considered. For somebody who's very old, a very high mortality rate may represent a fairly small impact on life expectancy. Numbers from: https://www.ssa.gov/oact/STATS/table4c6.html https://www.ssa.gov/oact/STATS/table4c6.html In the general case: a 70 year old man is expected to live another 14 years, while a 90 year old man is expected to live only another 4 years. So something that kills half of 70 year olds is depriving the 70 year old of much more life than the 90 year old.