The same reason why people don't bother to learn the history, language, and culture(s) in America. They just want to feel at home, for whatever reason they are their. Say you moved to a completely different country. Lets say France. It would take some time to learn the language, huh? And their food, would you eat your normal diet? Or what they eat? Sometimes you just want a different location, but the relaxed feeling of 'home'.