My town doesn't have the sharing is caring NAP activated and I don't have issues with others stealing, but I do have a problem with my sim stealing her own stuff. She has swiped herself clean. I have to babysit her to catch her. I play with moveobjects on and I set an object on her to make her error out if it. It's quite annoying. She doesn't have the Klepto trait. I would think it's funny if she was stealing the new stuff I bought her because she gets mad about that, but no, she is stealing her garbage finds. I have to keep spares in the bin. She even stole her garbage can ?