It is very difficult for people outside of the US to really understand what a hotdog, especially from a baseball park, really means to an American. Although they did originate in Germany (I believe), they are part of the American culture. Like Lana said, memories. I used to take my daughter to the Dodger games when she was little. She is a grown woman with children now and does not care for baseball, but I can tell you she always talks about the food we had.