Well you see in the
WHY IS THE CHURCH GOING OUT BACKWARD? their was some debate about the need for shepherds/pastors.
I did a post point, there will just about be someone else that will always know God better than we do, there will just about be someone who will always have a deeper relationship with God than we do.
It's being humble and honest that we are not perfect, by saying we don't need any shepherds or pastors, we could possibly getting rid of one of God's ways of communicating to us, because he sometimes uses the five fold ministry to communicate through and get the message out to us and other people. So for example a prophet may receive a word from God for you, and they may be led by the Holy Spirit to speak it to you, that is one way God can communicate with us, so in this example God gives a prophet a message and that prophet passes on that message to you.
Then you have a teacher with the God given ability to teach the word of God real well, this teacher has a real deep knowledge of God's word, that teacher received the knowledge from God to pass it on to you, so the saints may be equipped.