I honestly don’t care.
I can’t remember the last time I touched a $10 bill. I’ve been cash free since 2005. The only time I have physical money in my possession is when I get it for a Birthday/Christmas gift, or as a thank you for doing computer repair jobs for friends and relatives. And then it goes directly into my wallet until I drive past a bank branch and then I deposit it into my checking or savings accounts at the ATM. The last time I paid for something in cash besides my four haircuts a year, was in 2011 when I bought Sabres playoff tickets from a scalper outside of the Arena.
While I could name all of the people on paper currency, other than Lincoln on the penny, at this point I cannot name any other person on a US coin without looking it up. I haven’t handled change since probably 2005. Everything I buy or subscribe to gets paid via plastic.
The idea of physical currency is an outdated concept in my mind.