"Cultivate more female vanity", "My Brilliant Career"

Why are people not allowed to be themselves, to express the inner selves regardless of gender? Why does everything have to be classified? We live in a world of such absolutes, life is not like that, not black and white, not right or wrong, except for what society declares it to be. And what if no once cared? What if we said, "To heck with that!" Would we lose our moral compass?