Jesus Christ spent over three years with his apostles teaching them what it means to truly love and serve God and His people. He taught them how to be evangelizers in the fullest sense of the word, not being afraid to get down in the dirt with people in order to lift them up.
Our Lord did this by walking and living among the people, going into their homes, going out among the outcasts, the lepers, the rejects of society. He laughed with the people and He cried with them. He healed them and even brought them back from the dead. Finally, He died for them.
But since the time of the Reformation, the Church has decided that the best way to prepare men for the priesthood, for a life of serving God and His Church, is by shutting them away in buildings, regimenting their lives, and teaching them history and philosophy. Seminarians may occasionally venture out among the people, but it is only on the rare occasion.
To use the words of Pope Francis, our seminarians never get the smell of the sheep on them.