What is the life span of someone in the traditional family?

67 for the world

Slightly higher for women, slightly less for men. And of course there are many exceptions. It also varies from country to country.

In the US, the average is closer to 78 (75 for men, 82 for women)

The longest average life span in the world is in Japan: 83 (79 for men, 87 for women)

The shortest averages in the world are from several African countries: 46 (45 for men, 47 for women)

Those with a family unit tend to hit the average range or slightly above. Those without a family unit tend to hit the average range or slightly below.