How does Andrew disappoint his brother Antonio in the film 'Bless Me Ultima'?

In "Bless Me, Ultima," Andrew disappoints his brother Antonio by failing to live up to the expectations set by their family and culture. He chooses a life of rebellion and leaves home to pursue his own desires, which Antonio views as a betrayal of their family's values. This decision creates a rift between the brothers, highlighting the tension between personal freedom and familial duty. Antonio feels let down by Andrew's departure, as he longs for a sense of unity and guidance within their family.