If it's a world I really enjoy, my reading slows right down towards the end because I don't want to get there, lol. The worlds the best authors create just pull you right in and it's hard to let go at the finish. I find myself going back to re-read my favourite parts and once or twice I've finished a book then started from the beginning again. Some books stand up well to re-reading, others you pick up again years later and they've just lost their magic. Trouble is, you never know before re-reading one which category it will fall into and sometimes it tarnishes the memories you had. Some are just timeless though.