So, by supporting a male-only military draft, you thereby support a double standard of autonomy favoring women to which men would not have access...
Why should everyone feel a "duty" to participate in sexual reproduction/procreation? Would you expect homosexual people to engage in reproductive sex with members of the opposite sex? (or do you just mean we should be willing to donate our sperm/eggs?)
Aside from producing offspring and serving in the military -- are there any behavioral or personality characteristics that you believe should be exclusive to either men or women? Or are you suggesting that we discard "masculine" and "feminine" references entirely?