Retired folk are (or can be) still an economic benefit as long as they live. Consider the trivial case of a grandparent watching children so the parents can hav

Retired folk are (or can be) still an economic benefit as long as they live. Consider the trivial case of a grandparent watching children so the parents can have time to recover. But obesity and smoking do not kill people the day they leave work for the last time, it kills people in their 40s with years ahead of them to be productive.