
As a Latin American, I would like to ask why do books or fanfics in English written by people from America or other English-speaking countries use quotation marks in dialogues instead of em dashes?
Since I started writing fanfiction in English, I've noticed that my English-speaking readers find it odd that I use em dashes instead of quotation marks for dialogue. For as long as I can remember, when I read a book in my native language in the country where I live, the dialogue and conversations always use em dashes. What do you think? Are these literary differences?