9 things that seem like a good investment but are actually losing you a ton of money

With docking fees, gas, insurance, and constant repairs, boats cost an enormous amount of money to maintain.

"A boat is never a good investment! But they are fun," said Linda Robertson, CFP and Director of Planner Operations at Financial Finesse.

Roberton said you might be tempted to buy a timeshare or hotel points to "lock in today's prices," but the annual fees don't make it a wise investment. It will also be hard to resell when you get tired of it.

"I have talked to hundreds of people with the same story," said Doug Spencer, CFP and Senior Resident Financial Planner at Financial Finesse. "'Oh we love this place and it will be so much cheaper than paying for a hotel every year.' Until four years later you're tired of that location, or you need to use your vacation to go to friends' weddings and family events or you have kids and can't afford a vacation. Then you're just paying a bill every month for a place you never get to use and you really only get to use at off peak times when you do use."

The payoff of investing in your education depends on the circumstances, Tania P. Brown, CFP and Resident Financial Planner at Financial Finesse, told Business Insider.

"One hundred thousand dollars in student loans may not be worth the small possible pay increase," she said. "Look for tuition reimbursement, take longer to complete if it means little to no loans. Also look into certifications vs. a degree."

Scott Spann, CFP and PhD, agrees that "A college degree from an overpriced institution in a degree program with low paying job prospects" isn't worth the money.

Supporting your friends' ideas can be worthwhile, but the amount of money you put into a private business venture has to feel like an amount that you'd be willing to lose — or at least not see for a long time.

"I've had clients who invested in a bar and four years later they get free drinks but they haven't seen any of that money back," Pamela Capalad, CFP, AFC, and founder of Brunch and Budget, told Business Insider.

According to Brown, conventional wisdom that says a home is always a good buy isn't always true.

"If the only thing you can afford to is look at your house because the payments are so high you cannot furnish, travel, nor contribute to your retirement plan, then it is not a good idea," she said.

Spann advises that if buying a home pushes your debt to income ratio over 35%, then it's not a wise investment.

Waiting for agricultural investments to pay off is about as slow as, well, watching grass grow.

"Ranching and agriculture are a very long term game (think multi-generational commitment) with a ton of risk," said Teig T. Stanley, CFP and Resident Financial Planner at Financial Finesse.

You think this new show is going to be the next big thing? A show that's already doing well is looking for investors? Don't buy in.

"Leave entertainment production investments to the big players who can afford to lose a lot," Stanley told Business Insider. "Even shows that have huge box office numbers often lose money (for the investors) in the end."

Low-cost stocks might seem like a good idea because you can buy a lot of them, but they probably won't do you any good.

"I think penny stocks are often not a good investment," said Capalad. "Nine times out of 10 it doesn't work out ... Often those companies end up failing, and so then your penny stock ends up being worth nothing, ultimately."