Very well, but consider this: priests try in a special way to imitate Christ's life. Christ was celibate. Moreover, many religious live in community. It would be antithetical to their shared communal life if they did not share the vow of celibacy. Finally, it would not seem that parish priests give up sexual expression because it is demanded by the people. They do so because it is demanded by the Tradition of the Church, which seeks to carry out the will of God. Aside from centuries of celibate clergy, there is much Biblical precedence for this. Mt 19:12, Lk 20:33-35 and 1 Corinthians 7, especially verses 8-9, which touch on points mentioned here. Regarding 1 Cor 7:8-9, it is important to note that God seems to call those to the priesthood who do "practice self-control" and are not "aflame with [sexual] passion."

Finally, it is important not to be trapped in a rather recent Western paradigm that asserts, implicitly or directly, that sexual expression is necessary for happiness.