>...it is mostly the older generation that continue to use it.
People always forget the homeless.
In developing countries even people with homes often don't have addresses. But they can have a bank account on their mobile phone, like M-PESA.
People always forget the homeless.
If we want cash to remain stores must be forced (by law) to accept it, and this must be done soon. Even if we go that route you will quickly become that weirdo that payed in cash if you actually makes use of it.