Well, since I've started to own my own things now, being an adult going to college, I hate it when people use my stuff. If they ask, I guess it makes it a little better, but I would rather not let them use it at all. And not so much with big stuff, but small stuff. For example, a hand towel. I'm kinda big on hygiene, so I don't like it when other people use my towel. And my roommate doesn't do laundry a whole lot, and he often throws his hand towel into his dirty clothes, leaving mine the only one in the room. Personally, I bought two, so that I could wash one and still have one to use, but he uses the other of his two to cover something, and so when his becomes 'dirty', he doesn't have one to use, and so he uses mine. And for some reason that just irks me.