It is important to be responsible because responsibility is a sign of having good character. Irresponsible people often break the rules, causing injury to themselves and others.
Responsible people can be trusted, and this benefits both the person and the people counting on the responsible person. Responsible people also earn a well-deserved positive sense of self-esteem. Responsible people usually get farther in life, because business leaders prefer to promote people who can work without constant supervision. The hardest part is taking responsibility if something goes wrong but, even then, people respect a person who owns up to making a mistake and works to fix it.