Jesus' Silence

Have you ever noticed how remarkably silent Jesus was on various topics which divide Christians today? He said notably little about tongues. He said nothing about homosexuality. Jesus taught nothing at all about prayers to Mary. He did not ban alcohol or dancing. Nor did Jesus enforce any rules about resting on a Saturday or Sunday. So, why do Christians tend to focus on ideas that Jesus did not? Why do we not allow the founder of Christianity to teach us what is important and what does not deserve attention? Why are we divided over things that Jesus did not consider important enough to instill in his earliest disciples? When we spend so much energy on issues that he was silent about, do we then diminish the importance of issues that he did teach? Is the Christianity of Christ important?