Here's an uncomfortable truth that keeps surfacing on Reddit: plenty of young adults treat credit cards like free money because nobody ever properly explained that they're actually expensive loans. A recent thread lit up with stories of people who walked out of high school, got their first credit card, and proceeded to bury themselves in debt without understanding interest rates or why minimum payments are a trap.

One commenter captured the disbelief perfectly: "Isn't something like this supposed to be common sense? Didn't anyone teach them to be careful with credit cards?"

Turns out, no. A lot of people weren't taught anything at all.

When 'Common Sense' Isn't So Common

The replies painted a picture that's equal parts frustrating and predictable. While some people couldn't fathom anyone believing credit cards dispense free money, others admitted they'd made exactly that mistake. "No one taught me or prepared me for it," one person wrote. "I was racking up a bill and paying off the minimum amount and had no idea what interest was."

The problem starts early. In the U.S., banks flood young people with credit card offers the moment they turn 18. One Redditor remembered college vividly: "Banks would set up a desk in the student center, usually staffed by attractive young women, and sign students up for credit cards. Imagine handing a 19 year old a piece of plastic and saying 'Spend as much as you want and you only have to pay $15 a month.'"

That framing is technically accurate but wildly misleading. Sure, you only have to pay $15 a month. You'll just be paying it forever while interest compounds on top of your balance like financial quicksand.

It's Not Just About Not Knowing

Multiple people pointed out that knowledge alone doesn't solve the problem. Impulse control matters too. "If I see something I want in a store and I know I can just whip out a card and take it home there and then, it's hard to resist," one commenter explained.

Schools take some of the blame here. Financial literacy classes either don't exist or show up at the wrong time. One person noted that their school offered a class in 9th grade, years before any student would actually need to manage real money or credit. By the time they're 18 and getting bombarded with card offers, the lessons are long forgotten.

People from outside the U.S. expressed genuine shock at how credit-dependent American culture is. Others argued the confusion is a feature, not a bug. "Credit card companies make more money when people are financially illiterate," one person said. Hard to argue with that.

The Hard Lessons Stick

The thread filled with personal stories of credit card disasters in people's late teens and early twenties. "I had many friends who didn't see themselves living past their 20s and so thought credit cards were 'free money,'" one commenter shared. "Capitalism is made to prey upon vulnerable people. And just like anything the easiest prey is the young, old, or infirm."

But not everyone saw credit cards as purely predatory. Some people figured out how to make them work. "I get back about $1,000 a year between my Amex and Amazon Prime cards," one person explained. "Again, you MUST pay off your balance each month to make it work. That's the only thing you have to do in order to earn free money."

The difference between those two experiences comes down to whether you learned how credit works before or after you got burned by it.

One commenter summed it up best: "Things that are obvious and common sense to an adult often aren't actually innate behaviors, they're learned... which means that they also need to be taught."

Maybe if we actually taught them, fewer 22-year-olds would be staring down five-figure credit card bills and wondering where it all went wrong.