Paul Tripp, a counselor and pastor gives his perspective from years of experience:
Imagine a doctor coming out of an examination room to say to his receptionist, “Sick people, sick people, sick people! All I ever see is sick people! Why don’t healthy people ever come and visit me?” The church is full of people dealing with the effects of sin, people who are not fully formed into the image of Jesus Christ. The church is full of people who have lost their way and don’t even know it, who haven’t made a connection between their daily problems and the transforming grace of Jesus Christ. … The church is not a theological classroom. It is a conversion, confession, repentance, reconciliation, forgiveness, and sanctification center, where flawed people place their trust in Christ, gather to know and love him better, and learn to love others as he has designed. The church is messy and inefficient, but it is God’s wonderful mess — the place where he radically transforms hearts and lives.
Paul Tripp, Instruments in the Redeemer’s Hands, pg 116.