Why do I keep reading the same response about Iraq?

When there is a question posed about the Iraq war. I keep hearing people say that Iraq never attacked us we have no reason to be there. Prior to invasion, the United States, the United Kingdom, and France had been engaged in a low-level conflict with Iraq, by enforcing the two Iraqi no-fly zones in the north and the south of the country. These zones were created following the Persian Gulf War. Iraqi air-defense installations repeatedly targeted American and British air patrols and were often engaged by the coalition aircraft shortly afterwards. December 1998, Iraq announced it would no longer respect the no-fly zones and resumed its efforts in shooting down Allied aircraft. Saddam Hussein offered a $14,000 reward to anyone who could accomplish this task. June of 2002. The United States and its allies carried out military strikes against Iraqi targets after being fired on by Iraqi anti-aircraft installations. In retaliation for the Iraqi's now-daily air defense attacks on coalition aircraft, the September attacks included a 5 September 100-aircraft attack on the main air defence site in western Iraq.