I am impatient and have a hard time concentrating on reading unless I'm interacting with the text in some way: I force myself to take notes when I need to learn something. I read to learn, but I almost never read recreationally. It's not a learning disorder thing, because my sister (INFP) has dyslexia and a very limited attention span as well, but still loves to read.
I can't remember if I've ever read a novel I wasn't forced to or, in a couple of instances, because I made myself, under the impression that it was a character building activity. I know that this is sacrilege for an introverted intuitive to admit, but there it is. It does seem like 99.9% of INFPs like to read, though.
*braces for tomatoes*