>>409968518
>As proven by study of our ancestor's corpses we only lived to 30 years old up until recently in our history as a species.
Sorry but you have grossly misunderstood that tidbit.

The average life span was calculated that low because it also included the deaths in infancy, as well as general diseases also killing children. If you survived all that to the age of 20, you were expected to live for another 50 years. 
We did not turn grey and frail at 30.