Seniors or not, the most important thing to me is this: cash is issued by the government, and can be used without incurring any additional cost. Credit cards require you to sign contract with a bank, which is a private company, that makes money on every transaction. Government should never force you to sign a contract with a private entity, for any reason, so if they ever want us to go cashless, then I would expect they provide government-issued, free of charge credit/debit card for everyone first.