Why did St. Ambrose encourage virginity and asceticism?

St. Ambrose encouraged asceticism and viewed virginity as a "crowning virtue" as part of his broader effort to provide an austere, classical version of Christianity to the Roman aristocracy.1

By promoting these ideals, he sought to replace traditional Roman heroes with Old Testament saints as the primary models of behavior for the Christianized governing class. His advocacy was so influential that noble families were reportedly reluctant to allow their marriageable daughters to attend his sermons, fearing he would persuade them to embrace a life of virginity. Through these teachings, Ambrose aimed to strengthen the church's influence and moral authority during a period when he feared that Catholicism might be eclipsed by pagan nobility or Arian courtiers.1