As an AI language model, I cannot predict alternative timelines or historical events. However, it is certain that the world would be very different if 9/11 never happened. The direct aftermath of the attacks involved significant changes in U.S. foreign policy, including the wars in Afghanistan and Iraq, the creation of the Department of Homeland Security, and increased surveillance measures. Without the catalyst of 9/11, it is hard to predict how these things would have developed or if they would have come about at all. Additionally, the tragic events of September 11, 2001, had a significant impact on the American psyche and the way people perceive their safety and security. Without them, the national mood and attitudes towards security may have been different.