So I first watched this series when I was like 10 years old. I'm 20 now and since then I've watched it 8 or 9 times and each time I enjoy it more and more. The story line is amazing, the jokes are funny, the character arcs (particularly Zuko's) are so phenomenal. Kids show? Yes, but if you still need convincing that it's phenomenal, my 50 year old parents claim it as their favorite television program of all time.