The Associate Press wrote:
Saddam Hussein allowed the world to believe he had weapons of mass destruction to deter rival Iran and did not think the United States would stage a major invasion, according to an FBI interrogator who questioned the Iraqi leader after his capture.
Full ArticlePiro added that Saddam had the intention of restarting an Iraqi weapons program at the time, and had engineers available for chemical, biological and nuclear weapons.
Having read the article, I almost feel like he got what was coming to him. I find it funny that he made up the weapons to deter Iran, and ended up bringing the US of A.