In the end, it all boils down to this question, and the only answers that fly are the ones that are reflexive. In other words, if the answer involves applying someone's personal values onto others, then it must also involve applying the personal values of those others onto that someone, and generally that results in the preferences cancelling each other out. So often all anyone can legitimately assert is what the law explicitly states, because we all implicitly agree to comply with the law, as a precondition for living in our society. The assertion of expectations onto others, with regard to how they parent their children, with regard to which gender they identify with and therefore which dressing room they use, with regard to how they support their spouse or partner in making clothing choices, etc. - everything - is perhaps a fun diversion, but there really is no legitimate foundation for it.