There are a few reasons why we might believe in luck. Firstly, it can help us cope with chance events, such as being involved in an accident, a mugging or natural disaster. Secondly, it may give us a sense of optimism - sometimes when things seem hopeless we can cling to the hope that something good will happen through sheer luck. Thirdly, some people may simply see luck as a necessary component of life - without it there would be no favourable circumstances for rising to achievements or achieving successes. Finally, some people may believe in luck because they think it is connected with a higher power and is therefore beyond their control.