The challenge for God's sons and daughters

I've never understood why Christians do not take the commandment to "love your enemies" seriously. We Catholics believe in transubstantiation, and never question that the bread and wine become the body and blood of Christ. We eagerly obey the command, "Do this in memory of me." But love our enemies? When I raise this commandment, the general response I get is: "Are you nuts?" When will we believe in the transformation of enemies into friends? - Fr John Dear