Every woman struggles during pregnancy and childbirth. Becoming a wife puts huge stress on women, adjusting to the new role and new home/environment/system takes a toll on her, without enough love and reassurance, most women crumble with the weight of this role.
Viri probati will allow already married men to become priests but, will not allow already ordained priests to marry. Therefore, the change would not affect the rule of celibacy for Catholic priests, who are not allowed to marry.