This is a very thoughtful article about the mismatch between US cities and the people who will increasingly be using them - older people.
In Europe we normally talk about age-friendly cities.
There is an excellent video interview with Richard Florida, Co-founder and Editor-at-Large of The Atlantic Cities, Director of the Martin Prosperity Institute at the University of Toronto’s Rotman School of Management. The guy knows a lot about the implications of ageing on city design. Skip the first 9 mins that is full of self congratulatory words of no value. Dick Stroud