> thus I am honestly surprised all the time that a lot of US-Americans who are so freedom-loving and distrust the government concerning the restrictions of civil rights are not in love of cash
I think there are a lot of Americans who distrust government/banks and try to deal in cash as much as they can. And there are a lot of people here who have bad credit and can't get a credit card, and quite a few unbanked lower-income folks who don't have bank accounts or debit cards.
But I think maybe as someone from another country you're misinterpreting the whole "individual freedom" thing that a lot of Americans push. I don't think cash vs. credit cards is really a big part of that, for whatever reason. While it is more common in some places in the US these days for some businesses to not take cash at all, still the vast majority of businesses do take cash, and everyone has a choice in how they'll pay.
There's also a financial engineering component, as most credit cards in the US offer some kind of rewards program or cash back for purchases made. For example, a credit card I have, when used for Lyft rides, gives me the equivalent of 7.5% off (I have to use the savings for travel costs through the credit card's travel site, but that's fine and worth it for me). Some cards are simple and just offer 1% or 2% back and that's it, but some have categories (like "3% cash back for gasoline purchases"), and some people get into the "game" of trying to match a credit card with a purchase to get the most cash back.
And even for people who don't get into the "game", they certainly won't mind a "free" 1% or 2% discount on everything just for using a credit card. Some businesses offer a discount for paying cash, or a surcharge for using a credit card, but many do not, so if you pay with cash, you're essentially overpaying, since the cost of credit card fees is built into the prices. (This is of course another way that poor people who can't get credit cards get screwed.)
I guess often enough, convenience and saving money wins over the whole "freedom" thing for people here.
Finally, I think there's also a bit of separation. Many credit cards don't even feel like they're associated with a bank. Many larger retail stores offer a branded credit card that of course has a Visa or MasterCard logo on it, but you have to dig to find mention of an actual bank. So even Americans who might distrust government and banks just don't see a strong association there when it comes to credit cards.
I also just don't think there's that much bank distrust going on in the US. Sure, people are still sore about the financial crisis of 2008, but also consider that was 17 years ago. We haven't had big bank issues in the US where banks devalue currency, or follow government orders to across-the-board steal money from citizens, at least not in widespread ways. People generally love to rag on banks when it comes to fees and penalties and hidden costs and crap like that, but many of those things have been made illegal, and, again, even for a bank-issued credit card, I think many people just don't make that association. It's just an easier way to make payments, without the risk of carrying cash around (and with protection if the card gets stolen and used), and sometimes you get discounts and cash back... what's not to like?