Yes! I used to do that when I was little too, I couldn't say anybody's name even to get their attention. It just felt wrong and embarrassing.
I think the reason writers do it is so the reader remembers who's talking to whom. When you're watching a real conversation you keep seeing the people in it all the time, but when you're reading a book your mental image of the characters isn't being constantly refreshed by the fact that you're looking at them; when you read their name, their invented faces come into view again. Isaac Asimov doesn't seem to do this as often as some authors, and coupled with the part where all his characters are very similar in personality, this is why I can't read his books without losing track very fast. I still ought to draw a comic book and then read that.
I think the reason writers do it is so the reader remembers who's talking to whom. When you're watching a real conversation you keep seeing the people in it all the time, but when you're reading a book your mental image of the characters isn't being constantly refreshed by the fact that you're looking at them; when you read their name, their invented faces come into view again. Isaac Asimov doesn't seem to do this as often as some authors, and coupled with the part where all his characters are very similar in personality, this is why I can't read his books without losing track very fast. I still ought to draw a comic book and then read that.