We are all born thinking the world exists to serve us; that’s the essence of immaturity. Real work is often hard; it involves some level of self-denial, which is the essence of maturity. Jobs, even part-time and menial jobs, force us to have to sacrifice some immediate gratification for something larger than the moment. I can’t always do what I want to do when I want to do it. I bear some responsibility for my own existence. There are many other ways that work benefits those in transition to adulthood, but there is a certain kind of pleasure than can only be had by having the discipline of a job.