I always thought this was the flaw in The Stepford Wives, since it's clear that men don't really want doormats. You only have to look at how many men leave perfectly wonderful homemaker wives to find a little excitement on the sly. If men could be happy with a robot, they probably wouldn't get married in the first place, just hire a housekeeper/cook and a subscription to their favourite stroke magazine... Also, men would be much keener on having children to carry on their line than they seem in the story.