Explain how Brown v. Board of Education has any relation to this matter. Any judge, even the liberal judges that over-turned the first voted law in California would laugh at the sight of Brown v. Board of Education cited as case law. If it was suggested that gays go to separate but equal schools from heterosexuals, then yes Brown applies.
Brown v. BOE initiated the dismantling of de jure segregation. Citing separate but equal practices as unconstituional. Just as no black man this election season was required to fill out a "black voter registration" form, no couple should have to apply for a separate type of legal union.
nor is it necessary to differentiate between man and woman.
agreed, marriage should be sex-blind
What if I feel like I'm a woman tomorrow and I go and take the psyche tests to prove that I'm a women. So I have the feelings and I have the papers that say that I tested like a woman. Does that mean I'm a woman?
Technically, yes, that would mean that you view yourself as a woman and that your gender is female. These changes typically don't change overnight like in your scenario though.
Gender: The social definitions and expectations with being female or male.
Sex: A person's biological classification as a male or female.
Interestingly enough, there are many cultures with more than two genders.
Gender is the whole point. Marriage is like a mathematical formula. It requires 1 man and 1 woman. Nothing else. The second marriage is redefined, it will no longer have any value. Why? It's ambiguous to what it means. If I ask someone who's female if they're going to get married it could mean her marrying a male, or marrying another female. If it also gets redefined, what's to stop others from redefining it? What if a group of people want to define marriage as between 1 man and 7 women? Or 1 man and 1 animal? Or 2 men and 1 women?
So basically, your whole complaint about redefining marriage is, instead of having to ask "Are you going to get married?" You'll have to then ask "Who are you going to marry?"
And come on, don't even start with the animals, that's a rather offensive point and is below someone of your debating prowess.