I can see how that could happen. I was kind of ready for the abrupt ending because a friend of mine had the original War of the Worlds on vinal he used to play a lot.
The reason I hated it was because of the universe it portrayed. It wasn't a rational, orderly universe where people can be happy and achieve things. It was a world where everyone is at the mercy of forces outside their control.
One minute boom - the world is destroyed, the next minute boom - the world is saved. And the people in the story are just helpless pawns. What a horrible idea! What a horrible movie. Let fly the turds at War...