Just a legal fiction? If you look at what many FReeper men are looking for, that's one of the most sought after features! Careers and self sufficiency are much frowned upon, as, I imagine are women who have their own assets they might like to protect with a prenup.
Indeed should he be so foolish as to remarry to a woman who has a job, the new wife's income gets added to his and his alimony payments go up!