I was just watching the The Legend of Korra. lol Anyway I'd have to go with fire because it's the element I feel most connected too. Fire is very attracting. I'd be able to get the lighting that goes along with it too. :)
Well, I remember that the earth benders could eventually bend metal because it's part of earth. So, I would choose earth bender.
As for water benders they are kind of limited on their source but from what I saw they can bend blood as well... I'll just shut up now because I sound like I'm addicted to the show even though I haven't watched it in a long time.
I'd like to be an Avatar, so I could bend all of them! I think Firebending would be the awesomest though, because I could produce fire, and not have to rely on the elements to bend :D...
As for water benders they are kind of limited on their source but from what I saw they can bend blood as well... I'll just shut up now because I sound like I'm addicted to the show even though I haven't watched it in a long time.