Hopefully, only a small part of that 70% pays interest on their credit card balances. I’m 65 years old, of only “moderate means”, have been using credit cards for most of my life, and have never paid even a 𝘴𝘪𝘯𝘨𝘭𝘦 penny in interest on that credit. I hate the idea of losing money unnecessarily! The only interest…