Why the binary option for gender on profiles?

[Adinnieken]

MDMAlliance said:

Adinnieken said:

Gnac said:

I don't mind being called "it" or "that". Just don't make me choose a gender. At least let me chooz something like "not telling, hee-hee!", so that people with a judgmental disposition know to stay the fuck away from me.

I don't get it.

If you're male, you're male.  If you're female, you're female.  If you're transgender (pre-op or post-op), you're the gender you identify with.  For hermaphrodites or ambiguiously genedered persons, I'd say select the gender you identify with.

dem intersex peeps

You still have a gender identity.