This site claims that the average lifespan would be 8,938 years if people died only from "unnatural causes": http://polstats.com/#!/life http://polstats.com/#!/

This site claims that the average lifespan would be 8,938 years if people died only from "unnatural causes": http://polstats.com/#!/life http://polstats.com/#!/life Obviously this would depend greatly on where you live (much more likely to be shot in the US or Mexico than in Japan).