Why?

Why does most Japanese Anime's main male characters have a female voice actress as their voices?

Luffy (One Piece)
Naruto (Naruto)
Conan (Detective Conan)
Son Goku (Dragon Ball)
Ed and Alphonse Elric (Full Metal Alchemist)
Yugi Mutou (Yu-gi-oh)
Nobita (Doraemon)
Ash Ketchum (Pokemon)
Black Star and Death the Kid (Soul Eater)
Hitsugaya Toshiro (Bleach)
Asakura Yoh and Hao (Shaman King)

*Who would have known Toshiro, Ed Elric and Teresa of the Faint Smile were all one person?

Thats all for now..

Thankfully, Ichigo is not one of them..unless you count his childhood voice.