Real-Life Things Characters Don't Have To Deal With
The most prominent difference between fictional characters and real-life people is that fictional characters are usually driven. Whenever the characters in a storyline are highly motivated, the narrative becomes more convincing. In life, our desires, objectives, and perceptions are rarely as clear as well as powerful as they are for the main character in stories. With our lives inclined to drift instead of head in a given direction, we often attribute direction in hindsight when we seek to comprehend our existences by simply placing them into tales. Biographies of historical figures who appear to have proved drive or direction (and may have become historical figures because of these characteristics) are more interesting than nonfiction books of people whose motivating factors were less strong.
There are numerous reasons we would not like to live in completely fictitious universes. In Westeros, everybody dies violently. In Wreck-It Ralph, the pull of a plug has the power to end your life. If Superman appears on your planet, just remember... Superman is bad news. But we'd put up with all of that if it meant getting some of these perks.