Tech Insider : Economy
Sam Mitchell and his dog
Sam Mitchell lives in a tiny home in upstate New York and a trailer home in Florida.
Tech Insider : Economy, Economy, Politics
Older adult couple facing away from the camera
Mary Dacus, 69, said she and her husband (not pictured) live off their Social Security income.
Tech Insider : Economy, Economy
Magician holding wand over a hat, with a calculator displaying '$1,000,000' surrounded by sparkles and coins falling

A few years ago, Nathaniel Hudson-Hartman, 38, calculated that he'd need about $1.5 million in savings to retire comfortably in his sixties.