Because frankly, I am in despair at the thought of having to play a male Half-Elf. They just look... silly.
Add it to the DDO store, make it an option when TRing (Kruz can burn my body and make me into a living construct, but not this?), just do anything, please, to keep me from having to make a male Half-Elf when I TR. I don't mind anything else, and since this impacts just about nothing when it comes to game balance (since there's no difference between the sexes) I don't see why this couldn't be an option.
Please look into it.