Physical currencies too have the similar features. Over time everything have well advanced. Bitcoin wallet serves as one's own bank, because it is you who can control it. Banks are different, and OP have mentioned it just to indicate the reason that attracts.
Of course, there will be some similarities between fiats and Bitcoin, but I must say that Bitcoin is more advantageous and makes you feel that you truly own the coin you possess. Fiat has cheated us a lot, and the large difference in usage of the most popular payment system between countries irritates me. But with Bitcoin, the owner has the absolute right and would be able to pay and enjoy being paid as long as the dealer allows the coin.
In other words, with BTC, you can do payments that the best countries in the world could do with the same rights, unlike fiats in which they discriminate.
That's the advantage of Bitcoin because we ourselves control it and the value can rise over time in the future, Fiat is still money which in my opinion is more destitute because there are many things that we can't control in terms of our party influencing it in value, sometimes payments the system has a bit of complexity, although it is not as easy as Bitcoin which is used easily and quickly.
Now that there are many popular countries that accept payments with Bitcoin, it is an convenience for us when traveling abroad to visit the country, for example, there is no need to exchange fiat into their currency, but with Bitcoin, we just need a QR which is simpler, I imagine if this is all the world to apply it maybe they will have no trouble.
Illustration of the difference between Bitcoin and Fiat

