We Love a Little Right? (Luke 10:25-38; LD 2)

Our catechism makes a very strong statement that we naturally hate God and our neighbor.  It is not that we have issues with God and our neighbor, but that we actually hate God and our neighbor.  This is not something that we want to affirm about ourselves because we think that we love a little or that there is something in us that is not that bad.  So, why such strong language?  How do we know that we really do have issues loving our Lord?  How much should we love our Lord and our neighbor?