Constant headaches?

Now that is interesting. My question: should people who have absolutely no interest in sex be allowed to marry? According to conservatives, marriage exists so that the state can promote fertility and encourage the stability of the family and the proper upbringing of children. But a person who has no interest in sex won’t have children, and their marriages will send a signal to children that society approves of couples who have no children. Shouldn’t such people be prohibited from marrying? Perhaps forced to have children? you laugh, but they did that in ancient Sparta.