There are some photos somewhere on the internet of identical twins one of who smoked, the other didn't, the smokers all look much older.
I think live was much harder in the past, even in the 1960s / 70s.
My mum was in hospital for 6 weeks with scarlet fever, my brother had a course of antibiotics and a few days off school.
There was a lot of smoking, a lot of pollution, a lot more manual labour, even for a SAHP, my mum washed with a twin tub.
There wasn't as much time or choice for leisure.
People also left school and started work earlier, a 20 year old may have already done 5 years working.
Cosmetics were not as good and only used by women. A holiday was a week on the coast if you were lucky. And that had to be planned. My mother remembers doing to a 'guest house' the landlady cooked the meals but my grandparents (in reality my grandmother) had to provide the food so it had to be planned in advance.