I enjoy the Afghan brothers too. Let me preface my next statement by saying this is only MY opinion. I believe they feel they are representing a culture, their heritage. I believe they wish the viewers to see them as educated, hard-working and fun-loving. I believe they want the rest of the world to view them as human beings who care for people, thus the hugging, kissing, high-fiving, etc., and do not represent a small population called the taliban. Are they going overboard with their demonstrative efforts, perhaps, but I do believe, they believe, they are carrying an extra burden.