Manga is like tastly little candies. They are so good but you are done so fast :(
But I read 'em again and again... still, you're right, which is why I read most of it at the bookstore. I can read a volume in about 45 minutes if it's not engrossing. Fruits Basket usually takes me twice that, which is why I buy Fruits Basket religiously.
(Can I have a Kyo-kun in my collection, too, please? Or maybe a Shigure even if he is a perv?)