I'm an American who has a Monzo card and has spent a fair amount of time in London. Why don't people use credit cards???? The rewards are usually pretty good and as long as you pay off your balance every month, you're getting ~3% of your purchases back in rewards/credit
I stopped using Monzo because there are no rewards! Sure it gives me notifications and is easier to see my balance/add money than my Barclays account, but what is the point of the good UX/UI? Is it for fraud detection and making sure the merchants/bank aren't cheating you?
I ended up going back to using my oyster card/barclays card when contactless was the only option, and credit for everything else. Transferwise was also a godsend for converting money with clear visibility into the exchange rate/no fees
I agree that Monzo has been a great catalyst for UK banks to get their shit together on mobile apps etc. but there is nothing fundamentally different about their business...they're a debit-only bank with no physical presence and a nice app - and why don't more people use credit cards instead? Is it because it makes P2P transfers easier than the archaic bank transfers?