Reason for US involvement in Iraq?

Question Details: Everyone who has responded to my imploring about the war in Iraq has mostly explained how they believe the war is for oil. Now I have found information about the amount of oil we actually have here in Alaska. There is enough oil in Alaska's coastlines to supply the US for 200 years. Also, there are these new super-deep wells being dug by Russia that are over 40,000feet deep they call Cola-SG 3 wells. They have discovered so much oil that it raises the question as to whether or not the world is truely running out. I found this information from the you tube search on a man named Lindsey Williams. So do you really believe we are there for oil? I just feel this is the most pointless of wars. It is not about democracy, terrorism, liberation for Iraqi people, weapons of m destruction, and now I'm strating to think it isn't even about oil. What the heck are we doiong over there?!