Why should I? Just because Blizzard said so? Where's the story where they do something interesting and make me interested in them? We're just supposed to skip all that now and just play in some random maps with random nobodies who have zero weight with me? I understand there's a big enough market for that kind of dreck nowadays which is sad, so I guess as predictable as Blizzard is, they just go for the easy money. But I have to believe World of Warcraft was a $10 billion franchise because they laid out the groundwork that made us fall in love with the world and the characters.
By skipping all that hard work - they are just looking for easy money by telling us the characters are cool "trust us, it's awesome" and I'm not buying it.