Not sure why people are giving so negative about this..
Was a great movie, only downfall was that it wasn't long enough.
I know there was no explanation of how the apocalypse happened, where these monsters came from, how they move, how smart they are or anything else that people are complaining about. But the characters don't know any of that either..
It was a story about a father, his boys and how they've been surviving and growing.
Look past the petty things and see the true story.