I'm not what you would call a "fan", but I enjoyed both Animal Crossing and Animal Crossing: Wild World. ACWW is actually sitting beside my computer right now.
That said, there's only so much you can do in the games before the repitition kills them. I played mine for a good four months. You can visit my town if you wish, but there isn't really much to do. I planted trees in every possible location, so it's like a huge forest.