Are you kidding or what!!! both genders are very important of the society and for continuing human race. I don't know from where do you got such a vague idea but I think it won't be ever possible. Both Men and women need each other. I agree there are some countries like qatar, saudi arabia, maldives etc have disturbed sex ratio but no one have demanded for a separate state for a specific gender. Think of a situation, people travelling to other country or state just to have sex....lol.