Are you missing a gene, too?

If you look at the other male members of my family, then at me, you'd probably conclude that I somehow missed some gene that they all got.  My dad and his brothers are all sports fans, hunters, and fishermen.  I, on the other hand, could care less about sports, don't hunt, and rarely fish because I don't like to eat fish.  One could argue that I'm missing a gene that's otherwise common in my family.  How about you?  Are you the "black sheep"?  Is it someone else in your family?  Without being mean, what's different about that person, or you?  Do you think it's genetic, or was it brought about by something external (like a bad experience as a child)?