When you lend something to someone, part of you has to be okay with never seeing it again. When you let your friend wear that blouse on a night out, a piece of you knows you won’t see it for weeks. When you offer a pencil to someone in class, it’s pretty much their pencil now. When you give someone some of your Doritos, you would be crazy if you expected to see them again. 

But if the item you’re giving out is super valuable, like a laptop, then both parties should expect to follow through on the agreement. If the item is over $100 in value, then you should make well sure that you get it back (and you should be careful about who you give it to). But sometimes you think you can trust someone and you find out you actually can’t. Some of us don’t show our true colors until it’s too late.