Of course the purpose for winning people to Christ is not that they might win others. It's that they might bring honor to God in worship and that they might experience the joy of trusting God's mercy. We do not recruit people to recruit others. The content, the substance, the life, the goal, the end is God and the joyful experience of ascribing glory to him. Evangelism is not an end in itself.
Worship is an end in itself.
From that point on, all my thinking about the church revolved around the uniqueness of worship. Horizontal fellowship among believers is not an end in itself. It is right to seek fellowship specifically with the aim of being encouraged in faith and stirred up to love. So fellowship is not an end in itself, and the same can be said of all other ministries in the church. Christian education is not an end in itself, because knowing is not an end in itself.