Indeed, in this way, the very usage of magic creates all kinds of conflicts. Gender segregation, sexual mistreatment, scarcity and who knows what else. Even dried cum could be treated as a resource. There could be several different templates of countries which subscribe to the more or less similar ideology regarding magic.
Template A could be a male-dominated mage country that treats its powerless female subjects no different from trash.
Template B could be completely opposite, in that the ruling females treat males as slaves, not allowing them to use magic and only live to breed and have their magic extracted.
Template C could be a sexually open libertarian country where magic is shared willingly and orgies happen on the streets.
Template D could be a socialist country where magic is given to those who need them and it is the citizens duty to donate their magic regularly.
Template E could be a country that consider magic as unethical and decide to forgo magic altogether and focus solely on science and technology.
Template F could be a fascist country who build their military might and civilization on magic, where men are expected to give their semen for the country and men and women both have equal rights to magic as long as they're high up in the military or have specialized job description, such as a spy, pilot or doctor.