As someone about to implement something this is relevant to, I'd like to know what's wrong with just having a gender choice of: "Male", "Female", "Neutral". You

As someone about to implement something this is relevant to, I'd like to know what's wrong with just having a gender choice of: "Male", "Female", "Neutral". Your profile on some web site doesn't need to be a precisely accurate description of the real you. Those three options should be considered not what you are, but what you're okay with the web site referring to you as. If you identify as neither male or female, I don't see how you can be offended by choosing the option that remains neutral on the issue and identifies you as neither.