I remember quite some years ago hearing that we would one day be a "cashless society," and I thought, "IMPOSSIBLE!!" Wow. How wrong I was.It's been years and years since I even carried cash--I'm notorious for rarely having ANY cash in my purse at all, and almost never more than $10. It's been eons since I needed cash--for many years now, it's come down to "if I can't pay for it with a debit card, credit card, or--gasp--check, then I guess I don't need it!" Of course, actual money is still behind it all, but in terms of using/handling/keeping cash, that's been a thing of the past for me for ~25 years or so.
I tried to be like that in the UK for a while, going cashless, but then found many smaller places have a minimum amount for credit card transactions, like 5 pounds, which is a problem when trying buy small items like sandwiches, chocolate bars or sweets. Mind you if you come to this part of the world with a Mastercard, Visa, Amex or whatever, you're quite likely to get a puzzled look or "sorry we can't deal with that"....even from hotels and travel agents. As for Bitcoin, think I'd rather invest in something a bit more tangible like gold or something.
When I went to the UK last year for 3 weeks, I took cash, but put most of it into pre-paid Travelex Mastercard as soon as I got to Heathrow Airport, so I didn't have to carry it around with me, and much less risky as well. Had to do that because no places in Bristol accept China Construction Bank or Bank of Communications UnionPay cards.
It's been years and years since I even carried cash--I'm notorious for rarely having ANY cash in my purse at all, and almost never more than $10. It's been eons since I needed cash--for many years now, it's come down to "if I can't pay for it with a debit card, credit card, or--gasp--check, then I guess I don't need it!" Of course, actual money is still behind it all, but in terms of using/handling/keeping cash, that's been a thing of the past for me for ~25 years or so.

I believe the anonymity is necessary and essential to bitcoin, not only to keep or enhance it's value...but also as part of it's core principle of currency relying on peer to peer trust without the need for an institution as a middleman.
:0 kidding