Someone on Reddit asked a deceptively simple question: What makes wealthy people go broke? The answers flooded in quickly, and they weren't particularly complicated. One factor dominated the conversation by a wide margin: divorce.

The Most Expensive Personal Decision You'll Ever Make

"Divorce and drugs," one user said bluntly. Another chimed in with lived experience: "Divorce costs a fortune. Doing it now. Trust me."

The pattern repeated throughout the thread. It's not just the emotional damage, respondents noted, but the legal fees, asset division and lifestyle upheaval that can obliterate someone's net worth. One Redditor condensed it into what they called "the four D's: Death, disease, dismemberment, or divorce."

Someone referenced former Berkshire Hathaway vice chair Charlie Munger's perspective on the matter: "Charlie Munger said the single most important decision a person can make is who they marry. The cost, disruption and destruction of value from a divorce is serious."

That's a sobering way to think about marriage, but the financial reality backs it up. Even people who start with substantial wealth and good intentions can see it all unravel through one major personal misstep.

Divorce wasn't the only culprit, though. Reddit users compiled a comprehensive list of wealth destroyers: lifestyle creep, addiction, gambling, bad investments, poor planning and the classic mistake of spending money to look rich.

When Your Expenses Rise Faster Than Your Income

"It's almost always lifestyle creep that stops people from advancing," one commenter explained. "Then when things go bad they refuse to take a step back again, financially ruining themselves."

That's the ratchet effect in action. People scale up their spending as income rises, but when earnings drop or disappear, they can't or won't adjust downward. The result? Debt, depleted savings and financial disaster.

Another popular theme: spending to keep up appearances. "Trying to look rich" and "keeping up with the Joneses" appeared repeatedly in the thread. As one person aptly noted, "If people lived like you see on TV they would no longer be millionaires."

The Dangerous Generosity Trap

The discussion also touched on a less obvious wealth killer: inability to say no. "Not learning how to say no when friends and family ask for money," one person warned. "I have seen more people doing well overextend themselves out of guilt or obligation and end up underwater than I've seen people go broke making bad bets."

Another user described the slow-motion collapse: "Before they know it, they are in credit card debt, behind on their mortgage, and out of options."

But the conversation kept circling back to divorce. It wasn't just the most common answer; people described it as uniquely devastating. One person called it "a financial tsunami."

Better Decisions, Not Just Better Investments

What's striking about this entire Reddit thread is how little it had to do with stock picks or market timing. The biggest threats to wealth aren't bad trades or economic downturns. They're personal decisions: who you marry, how you spend, whether you can resist peer pressure, and if you know when to say no.

As one Redditor summed it up: "Best to learn this lesson in your 20s. Plenty of time left to make better decisions."

The takeaway isn't complicated. Managing wealth successfully means managing life successfully. You can have the best investment strategy in the world, but if your personal decisions are a mess, your money probably will be too.