Here's the reasons we went into Iraq.
1. WMDs. We know he had them. The libs won't admit it, but it's true. He was also crazy enough to use them, as we saw in the Gulf War.
2. Violation of U.N. sanctions. Iraq had violated dozens of sanctions, each of which carried the stipulation that violating them would constitute an act of war. As impotent as the U.N. is, it's even more impotent when the U.S. doesn't enforce their sanctions.
3. Weakness. The armies of Saddam were weak and easily folded under the weight of the awesome and terrible power that is the United States armed forces. Of all the targets we could have hit, this one was the ripest for the picking.
4. Demonstration of Power and Resolve. After the initial invasion and demonstration of our strength and swiftness, several countries and terrorist groups were quick to submit to our rules. This effect, however, has all but died out, thanks to the left's determination to turn all public opinion against military action.
5. Pinch Iran. Iran is the world capitol of terrorism. It was concieved in the West Bank and born in Munich, but it is based in Tehran. From the beginning, we knew that this would culminate in a grand battle against Iran, our first enemy in the long standing conflict between the United States and Islamic fascism. If you look on a world map, you will notice that Iraq and Afghanistan are located on opposite sides of Iran. When that battle comes, we are in perfect position to crush the Iranian army between the might of our combined forces as a vice would crush a tomato.