Why do Christians need to be preached at?

The Christian family, according to the apostle Paul, is compared to a body. It's a living network of different but equal members and all their resulting relationships. What I find interesting is the idea that's developed somewhere along the way, that the Body needs to be constantly on the receiving end of "professional" monologues delivered by a select few. The assumption seems to be that these speeches are what nourish, guide, and protect the Body spiritually.

Scripture portrays micro shots of the story of how Jesus preached the gospel of the Kingdom of God. Indeed, there was some lecturing (these were, at times, responses to questions and need/situation specific), but it didn't appear to consume the bulk of His activity. Service type activities and conversations appear to have received His greatest attention and through those mediums He "preached" non-stop!

I wonder if speaching (a term coined by Doug Pagitt to refer to preaching as speeches) has it's place, but not as a regular discipline? Maybe it works best for the initial presentation of ideas and topics to a broad audience?

So much of the New Testament seems to focus on the idea of "one another". We are edified by one another. We are rebuked by one another. We are taught by one another. We are loved by one another. And these networks of "one anothers" are influenced and guided by the Holy Spirit.

I wonder how many members of the Body of Christ see themselves as preachers? Not many in terms of a traditional view of preachers as professional clergy.