Used to be niche here as well, but nowadays it's a useful tool, especially with the modern banking apps. It also has really cool and free year-long worldwide travel insurance, something that would cost me a lot of money otherwise. And I get discounts for using it to pay for hotels and car rentals and accumulate airline miles with every purchase.
Really, we in EU get all the good features with none of the bad things that the US people suffer from. I recommend to ask your bank about their available deals.
In the banking app, I was watching my credibility directly affect the loan offers available to me in real time. I got my interest rate down to half of the usual deal (which is based on my income and expenses) after a year of paying back on time. It really pays off.