ooh yeah gender fields, "fun" stuff. Sadly, very limited options are way too common.
What I almost hate even more is being presented with three mutually exclusive options of "male", "female", and "transgender"; So I'm like (and please pardon my nerdy BASIC syntax):
10 I want to put female!
20 But I don't want to be erased as a trans person!
30 But I don't want to be degendered, so...
40 GOTO 10
And it leaves genderqueer and nonbinary people even *more* out of the loop (pun totally intended, augh, okay, sorry nonprogrammers but I had to say that too)
Just... augh! It isn't that hard to have an optional fill in the blank form. If you want for some extra "entertaining" reading, I can dig up some of the controvery surrounding making the gender field in diaspora a plaintext form, some of the commenters where abandoning all logic and getting aggressive trying to dream up reasons why this project *needed* the gender binary.