Jesus does not begin His ministry until His thirties. Samuel lives his live in the temple starting at three years old. Even though Jesus is the Son of God, most of His life is spent outside of the temple. Today's reading is one of only a couple times that it is mentioned that He even visits it. Perhaps this is part of Jesus' message: that being devoted to God is more than spending one's life in the temple. Rather, He stayed with His family until the time came for Him to preach out in the world.
Christians need to be Christians out in the world, not just while at Church. Being a part of our families is a holy and necessary part of out faith. Following the path of Christ means to do so every day as part of our everyday lives.