We pretty much always have a balance. I have my whole adult life. Our credit is excellent, so the interest rate is low, or we use a card that gives us 0% for 12-18 months. We also accrue points for airline tickets.
We probably overspend on travel, eating out, concerts and sporting events. At the same time, keep our same cell phones until they actually die, have modest cars we keep for a long time.
I try to balance between spending and saving wisely and the philosophy that you only live once.
May or may not be the wisest way to go about it. The point is many people do willingly carry credit card balances.
A simpler way to see that is to go to Best Buy on Black Friday and watch throngs of folks spend hundreds of dollars on their very high interest Best Buy card.