RC apologists seem to think Christ was advocating castration and eunuchs.
Christ was sympathetic to those who had been born deformed or who were castrated for whatever foul reasons.
But He certainly wasn't advocating the practice.
Rome has always had a strange and perverse conception of human sexuality. Christians believe the body is good because God made our bodies and gave us life in those bodies. And from those bodies God creates new life. One day we will even be re-united to our glorified bodies.
God does not want us in self-inflicted pain, such as JPII regularly flogging himself with a leather belt.
God wants us in joy.
This goes back to the OT law that men born or injured with certain conditions could not hold the priesthood. Sometimes, like lepers and prostitutes, the official religion was unaccepting of them. The social outcasts were the people he went among and preached to.