Well, I think that when you first begin playing New Leaf, there is a lot of stuff that you can do for a single day, and after all of that is done, you have to wait until the next day. Unless you are planning to catch tons of fish and bugs, or get sick of waiting and decide to travel through time, then I'm afraid that there isn't much to do for hours a day. I think that you could possibly get more out of it once you achieve more within the game, but for me, I just doesn't see much to do other than go fishing, water flowers, and catch bugs. It's only exciting when there is a special event occurring, or you actually have something you need to do. Communicating with other players is a very good way to make the most of New Leaf, but other than that, I can't think of anything worth doing for endless hours.