Girls are allowed to cry and cower, because it is cute, and we gentlemen are supposed to protect them.
But women and naturally less suited for war and conflict than men. If the vote were restricted solely to men, perhaps the public debate over public laws would make fighting wars and fighting crime its primary, or even its only, order of business. Perhaps all these other things, housecleaning the environment, mothering the poor, schoolmarming the schools, would be done privately, not by the government.
Perhaps if women did not vote, they could see to the environment, the schools, and the poor through the institutions of the Church, which are better suited to charitable activity and feminine compassion than the hard and harsh swords and balances of townhall.
The Nanny State only exists in nations where all the Nannies were given a vote.