I also find it offensive that liberals are trying to cast gender as something that is just a mental state, when it most clearly is not, any more than being human, tall, short, fat, thin, are mental states. I only wish biology could be changed simply by deciding it is different--I'd be twenty pounds thinner, taller, and non-arthritic in a heartbeat.
Terms of antiquity like “the fairer sex” are employed, not “the fairer gender”. Such distinctions support reaganaut’s original contention.
Just google any government form (pre-2010), for example a passport. It doesn’t have an entry for “gender” as M or F, but rather has an entry for “sex”.
Only with modern language bastardization have we adopted the term “gender” to mean “what sex you pretend to be [today]”; that is, a subjective rather than objective term. More post-modern deconstructionism. God save us.