Well I've got one that's not nearly as bad (financially) but looking back has caused me tons of problems. Getting a degree in something that you're good at (and at the time had plenty of jobs) but that you hate doing. Trust me going to work everyday to a career you hate isn't worth the paycheck (unless you make enough to retire after a couple years, which I didn't)...
"I knew someone who got a loan for their wedding, but decided to blow it all at a casino. Now they have a loan for 20k to pay off and nothing to show for it."
Well I've got one that's not nearly as bad (financially) but looking back has caused me tons of problems. Getting a degree in something that you're good at (and at the time had plenty of jobs) but that you hate doing. Trust me going to work everyday to a career you hate isn't worth the paycheck (unless you make enough to retire after a couple years, which I didn't)...