It doesn't matter which qualities my friends have, I'll get bored of them in less than a week. However, I usually search for people wanting to take risks and able to understand me. Never met someone like this.
As I said before, I get easily bored of my friends, and sometimes I'll even abuse of their sympathy and "our" trust in each other and take advantage of their loyalty, so I don't think I'm a good friend, but if you want to have fun, with me you'll get tired of having fun, I guess that's something that attracts people to me.