I am a voracious reader and can go through a dozen 400-500 page books a year. 700+ pages is where I really feel like I can get into a story.
Problem is, there just aren’t that many 1000+ page books anymore in the genres I enjoy the most. I’ll see mostly book series of 3-5 books all in the 400-500 page range, and I can devour several different entire series over the course of a year.