The show was originally intended for children, but I can say that it is very much enjoyed by teens and adults alike! Firstly, the storyline itself is something to marvel at. While incredibly fictional, it is also includes aspects that ring non-fiction. The Avatar world will go down as one of the most creatively constructed fantasy universes in history, alongside the greats like GOT, Harry Potter and Lord of the Rings. Secondly, the story tackles real life issues and historical catastrophes, like war, exile, genocide, as well as mondaine issues such as love and friendship. The sheer amount of life lessons and philosophies packed into both Avatar the Last Airbender and Legend of Korra is incredible, drawing heavy inspiration from Buddhism and Hinduism alike. Finally, the show despite being catered towards children becomes more enjoyable as you watch it when you're older. Indeed, having watched it as a child, I loved the show and the fantasy aspect, but rewatching over and over again as I've aged, I've come to appreciate the storyline, the craftsmanship and the life lessons, and I haven't gone a few episodes without crying each time. The series knows exactly how to grab hold of your emotions. It is truly a masterpiece!