Narnia is my favorite book series of all time and it has been since I was nine years old. That's half my life now. o.o
Anyway, I love Lord of the Rings and I feel Harry Potter is an okay series (though I don't believe its everything that its cracked up to be, however, I'm not gonna get into that here) and LOTR is my second favorite series, followed by The Archives of Anthropos by John White.
Narnia is my favorite because it changed my life. Legitimately changed my life. The first movie came out when I was still a little kid and terrified of virtually everything. I don't know WHAT possessed my parents to take me to see LWW, but I'm glad they did, because it cured me of my terror of everything. As soon as I learned that there was a book series, I wanted to read it, and I did. Over and over and over and over again. Because of the first Narnia movie and the books I discovered ALL the rest of the worlds I now love, including Middle Earth, Anthropos and Hogwarts. If I had not discovered Narnia I would probably never have met you people and I would never have grown up the way I did. I might not still be scared of my own shadow, but I also don't know if I'd have discovered my talent of writing and been able to go on adventures in Europe.
And that is why Narnia is and will be, for the foreseeable future, my favorite book series. That, and its a wonderful story and the end is beautiful and I think Lucy and I would be best friends. xD