The right comparison is between you and someone who has achieved the same education/social level in the same period of time.
My own grandfather did hard manual labor his entire life and drank whisky like a fish until he was in his late 60's. Chewed tobacco his entire life. When he was 88 I saw him working in the back yard and he had muscles that I didn't have at my prime (in my 20's). He died at 95.
I walk 4 or more miles a day, 7 days a week, some up steep hills. That's my commute, on the days that I go to work, my exercise when I don't. I really don't expect that I'm simulating my grandfather's level of exercise, but I hope it does something to get me to 95, in as perfect health as my grandfather was when he died.
For a man born in 1895, life expectancy was 48 years. For a man born in 1985, life expectancy is 71 years.
For example, claims of necessary action based on real statistical data are unwarranted. The existence of populations that thrive in the so-called 'unhealthy environment' do show there are more variables at work. Who's trumpeting "we should all work like 1800's laborers for good health!"? Nobody, but not because its not true. Because we're lazy-ass modern narcissists who want a quick fix.