Are you are presuming that the whole duty of the body is just evangelism or that which feeds evangelism? Please carefully read through 1 Cor. 12:14 - 31 examine yourself to see if you have looked at the evangelist as being the only worthwhile part of the body. If you have (and I cannot judge your heart) then read it again. See if you look at "winning souls" as the only worthwhile service in the body. If you have taken up a narrow view of the body of Christ and minimized the gifts of God to the church (Eph 4:11-16) other than evangelist, does that not mean that you have minimized what God has decided?