It’s great for reading, but it gets dangerous when you lose sense of the boarder line between reality and an imaginary world, it does make you a better person because of how you learn things and grab characteristics from characters in the story as you read and get to know them, you will find a character you admire and think to yourself , “I want to be like that person” so yes, ultimately if you know the difference of reality and fiction, it does make you a better person :)