There's definitely a feeling with a short story that it's pure story telling. You're not really worried about theme. You're not going to stay with the characters long enough to live your life with them. And you have different kinds of relationships with them.
Neil GaimanRichard wrote a mental diary in his head. Dear Diary, he began. On Friday I had a job, a fiance, a home, and a life that made sense. (Well, as much as an life makes sense). Then I found an injured girl bleeding on the pavement and I tried to be Good Samaritan. Now I've got no fiance, no home, no job, and I'm walking around a couple of hundred feet under the streets of London with the projected life expectancy of a suicidal fruit fly.
Neil GaimanPeople talk about escapism as if it's a bad thing... Once you've escaped, once you come back, the world is not the same as when you left it. You come back to it with skills, weapons, knowledge you didn't have before. Then you are better equipped to deal with your current reality.
Neil Gaiman