The name "churches of Christ" is not a title (though it is usually used consistently for the benefit of those traveling to identify and differentiate us from a denomination), but rather a description.  We use this name because it is in scripture (Romans 16:16), and it gives glory to our founder, Jesus Christ.  After all, Jesus did say "I will build MY church" (Matthew 16:18); and the Bible tells us that Jesus established the church with his own blood (Acts 20:28).  Why name His church after a man (Lutheran, Wesley, Mennonite), or after a form of government (Presbyterian, Episcopal), or even a particular doctrine  (Baptist, Methodist), when the Bible simply calls it the churches of Christ, or church of God, or household of God?  All of the names used in scripture give glory to God.  Instead of focusing on a title, we strive to live up to the "descriptions" of the church in the Bible.