Why did Jesus say he came to create division? In Luke 12:51-53 Jesus said:


  Do you think I came to bring peace on earth? No, I tell you, but
  division. From now on there will be five in one family divided against
  each other, three against two and two against three.


There must have been a larger point to this. What was the division that he spoke of? I can't imagine it's as simple as separating the "good" from the "bad" since he often made it clear that God holds no distinction between those two types of people, and loves everyone equally and unconditionally.
Man was created for a loving relationship with God, therefore the first and greatest commandment: 


  Mark 12:30 …thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment.


Why do we love God?


  1 John 4:19 We love him, because he first loved us.


We know this:


  Revelation 1:5 …from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth. Unto him that loved us, and washed us from our sins in his own blood


The division Christ speaks of is between those that love God and those that will not.  Those that want what God wants for their lives and those that want what they want for their lives.