HOW, I felt the same way about having the feeling it was to get the public prepared but then my intuition screamed that they don't want to prepare us, they want it to take people off guard.
Its almost as if the makers of the film are trying to warn people, maybe thats it. I'd say that 90% of the public will not think that something as catastrophic as that could actually happen.
This movie wouldn't be the same at all on the small screen. Usually I wait until the DVD comes out, but not this time lol. Maybe your daughter is old enough now to go with you.