Why do people think nothing bad could ever happen to them?

People often believe that nothing bad could happen to them due to cognitive biases like optimism bias, which leads them to underestimate risks and overestimate their own resilience. This mindset can be reinforced by a lack of personal experience with negative events, creating a false sense of security. Additionally, societal narratives and media portrayals can create an illusion of safety, prompting individuals to feel invulnerable. Ultimately, this belief serves as a coping mechanism to maintain a sense of control and well-being in an unpredictable world.