Ann Coulter has been advocating for this for years, and I am not sure she's joking. Honestly I would probably vote to repeal it. Think about it pragmatically. If the country would be better off with conservative values, and women (especially young single women) vote for the opposite, then it would be logical to repeal their right to vote. I would let them run for office, so that Michele Bachmann and others could serve.
Democracy is about a process, a means; it is not about an ends, but rather granting legitimacy towards the ends that we arrive at. Even if we accept that the ends of repealing the 19th Amendment would be better policy, that those ends would be achieved through immoral means (depriving half of the population of their representation in government) implies that those ends are also illegitimate in nature, for they have not been arrived at with the consent of the governed.