Not just girls like it! Also to answer your question, I am a teen girl and I am obsessed. I think it's just the way the story connects and all the real-life connections made behind it that really bring the parents and older kids into liking it as well! And you never know if they're truly done making episodes, or if there's more on the way. Some people may not like it as much, but it's a popular opinion on family shows.
