The politics of modernity has so successfully made Christianity but another life-style option it is a mystery why the new atheists think it is important to show what Christians believe to be false. Such a project hardly seems necessary given that Christians, in the name of being good democratic citizens, live lives of unacknowledged but desperate unbelief just to the extent they believe what they believe as a Christian cannot be a matter of truth.
As a result, Christians no longer believe that the church is an alternative politics to the politics of the world which means they have lost any way to account for why Christians in the past thought they had a faith worth dying for.