It's Important So I'm Saying It Again

 Modern countries don't have men and women. Modern countries have women and prostitutes. The prostitutes are allowed to whore themselves to the women if they want, or even, lately, to each other. The women have to (stochastically) pay through the nose for this, however.
 Voter = woman. No exceptions. These days, prostitutes are also allowed to vote, because elections are made up and the ballots don't matter.
 Having a wife is dramatically cheaper than a prostitute, but of course what use would a woman have for a wife? It's not like she can take care of one. Thus marriage is de-facto banned.