Yeah, I do.
A friend of mine is terrible keeping her stuff. Half of of the boxes have nothing in them and the other half have the discs swapped. But before I knew how she kept her games I lent her TWO games, at the same time. She was going for a trip and was out of games. She wanted to try FF Tactics Advance and TLOZ: A Link to the Past, both for the GBA. Of course, no problem. I lent her the games. So she returns form her trip. "Hey, I lost your FFTA". Great, over 100 hours lost. "Well, there is nothing to do, but the other game is right, isn't it?" "Yes, I'll bring it tomorrow. And I'll buy you the game I lost". She kept delaying everything. And one day she calims she already gave it back. I have no recollection of that, but I believe her.
Years pass. About a year ago I go to her place and see a small GBA cartridge. I have the compulsion to see all games that are near my hands. I grab it. The yellow sticker is almost unreadable, but I make out "TLOZ: A Link to the Past". "It can't be" I tell myself, but luckily I have my DS with me, so I pop the game in. The first save slot has my name in big letters. When she returns to the living room I ask her WTF, her answer "It was yours?". I will never again let her even touch my games without my supervision. And I'm still waiting for anotehr copy of FFTA.
And all of our friends have the same attitude. She completly destroyed an anime series another friend gave her. He loved the series.