But this is directed to everyone, not just clergy. The Church on the other hand is free to choose those whom it wishes for clergy and it has decided to choose those who accept the charism of celibacy. No one has a right to be a priest.
That's what it does NOW, sure. What church elected Saul(Paul)? None. God selected him. That was the way Paul was elected. As he evangelized, he chose members to accompany him and they in turn pastored churches. So if a married man wants to become a priest because God called him to service, your church would reject him because of his marriage. You would be thwarting what God wanted through your doctrines which are not founded on Biblical teachings. That's not the way it used to be is all I'm saying.
Re: Ought vs must: That is why celibacy is a discipline of the Church not a doctrine.