In Asimov's Black Widower's story, each dinner guest us asked, "How do you justify your existence. An editor asked this question of Asimov:
"How do I justify my existence? By my writing, I amuse people and make them happy. My writing style is simple, straight-forward and upbeat - nothing nasty or horrid or violent or perverse. In this sad world, I think that anyone who spreads happiness automatically justifies there existence."