I'm a Christian and this is my basic understanding of what the point of Jesus' death is.
It was to save us from the meaninglessness of our selfish existence by bringing us into a relationship with God.
Naturally we don't love God.
Jesus died to show us the ultimate sign of love so that we would have a chance at loving God. It is only in first believing that God loves us that we can love God.
If anybody really wants to understand the answer to this question ask God about it. even if you don't believe in God you can say, "Hey God! If you exist I challenge you to show yourself to me and make me understand what your deal is!"
I'm totally serious. God shouldn't need people to fight his battles for him.