"Investing in BITCOINS using a credit card. Banks do not need these type of customers."
Why did you say that? What's wrong with "these type of customers"? Personally, I used to charge my btc purchases on a card for convenience only. I never carry a balance into the next month. They may not "need" them but you can bet they "want" them. Banks don't care about you. They only care about making money off you. They would love nothing more than to see people go into debt on their credit cards buying crypto, unless they have an ulterior motive, imo.