Investments that cost you money and why I don't like them

A mouthful of a title for sure, but it says it all. I frequently find myself dealing with people who get into "investments" that cost them money. By "cost them money", I'm not talking about an investment that went south and ended up at a loss. That happens all the time and is part and parcel of all investing. Rarely do investors find themselves without any losers. No, that's not what I'm talking about.