I can understand why you all hate WoW so much. It's not a pleasant movie. War movies are entertaining when the hero uses his virtue (knowledge, determination or teamwork) to succeed.
In the movie American's are getting invaded and they can do nothing about it. Their weapons are useless, civilians get fried like ants by towering monsters.
Tom Cruise is not brave. He and his family have to run and hide like rats from the exterminators.
And in the end the aliens lost not because someone made good use of his virtue. They lost because of bacteria... that's so unmanly.