Money in my bank account I can spend on just about anything. If I realise "shit, I'm out of toilet paper", I can go to the grocery store and pay by EC, with the money in my bank account. The money that I keep in there, just in case there's something I want or need to spend money on literally anywhere.

Besides, my bank is subject to my local jurisdiction and my own country's laws and regulations. If my money is with some US company, I can't be sure whether they'll suddenly go "sorry, pal, your money has been confiscated on some bullshit pretense you have no way of actually fighting back against".