Why we're there, part 2

Because of this.

Women, children found in Iraqi mass grave (AFP):
Soil and bones, believed to be human remains of victims of Saddam Hussein's ousted regime, are displayed after they were found by workers repairing underground water piping in the holy southern city of Karbala.(AFP/Abdul Amir)AFP – The remains of women and children, believed to be victims of Saddam Hussein's ousted regime, have been found in a mass grave dug up by workers who were laying down pipes in Iraq's southern city of Karbala, a local official said.