My oldest brother was more of the wild child and looking for bad stuff to do. One factor between him and myself and the brother in the middle is that he was pretty moderate on the extroversion scale. The middle brother and I are obvious introverts. The middle brother is pretty solid on conscientiousness, but my oldest brother seemed to be lacking it. Then again he still had enough drive to pull things together at the last minute and get stuff done rather than just abandoning it. Without him, my other brother and I would have been a lot better behaved I think. There's no telling what I would be interested in now without his influence on me.