Honestly, I tried to like it. I really tried. I approached it with an open mind and swore I would judge it on its own merits. But, once I had got over the ideas of sparkling vampires, vegetarian vampires (who only eat the blood of animals) and the shock of meeting Edward Cullen in general, it was Bella's incessant whining that really got under my skin and made me dislike it. On the other hand, the author has done a good job to create a character who makes the reader actually feel something about her characters. so in this respect, I have to admire her nonetheless.
Now, if only Edward could renounce vegetarianism, Bella may just become a bit less whiny and a bit more wary of him.