I've had a startling number of conversations exactly like this:
"Oh, you read as well? What do your read?"
"[this book], [that book]"
"Those are all non-fiction, any fiction?"
"I don't read fiction. If I'm not going to learn anything, it's a waste of time."
"..."
Oh man, have I gotten to read a lot of history recently.
And also fiction.
Frequently at the same time.