DEAR ABBY: Years ago, I bought a beautiful little cottage in the North Carolina mountains as a second home. I feel very lucky to be able to afford such a luxury and have always been generous, sharing it with family and friends. However, it has reached the point where people constantly ask to use it. Abby, my guests have left holes in cushions, bubble gum on couches and someone’s child even peed in the bed. Only once in 10 years was I left with a thank-you note and a gift card to a local store. Most of the time I ...