Different cultures have different value placed on gender. Males most often inherit power, and keep it. Sometimes this is not the case. Idealization of them is dysfunctional to change. The person who possess both kinds of traits is better suited to cope with the demands of modern life.
Males can express their feelings well and are more nurturant than once thought possible.
Women can be assertive, task oriented, skilled at problem solving and self-reliant than once thought proper. Won't stop the car to ask directions. Females nurturant, passive, helpless in a crisis. Confining sex role expectations can restrict a couple's sexual relationship as well - who initiates, who's on top, who's on first. The Parent-Child relatonship can also be restricted by traditional sex roles.