dumb monster movie

Rating: 4/10 (17 July 2018)

Right at the beginning I thought this was going to be a dumb movie when the premise was revealed: that people need to keep quiet to avoid being eaten by blind creatures that hunt by sound. Wouldn't the creatures all became roadkill on the freeway or train tracks? And how the hell did they evolve to be blind?
If this was real, people would live near naturally noisey places, like a waterfall. But instead, they choose to live in a quiet house. Also, what kind of family allow their youngest and most vulnerable child to trail behind without any adult to look over him? Considering how dumb they were, it's amazing they were the only surviving family, beating even the military.
To get pregnant during a crisis like this? Do they have no means of birth control?
It turns out the creature can be killed with a shot gun. So why didn't they shoot them earlier in the movie?
It looks like they have time to set up warning lights at the house. So why didn't they also set up some speakers to play distracting noise to lure the creatures away from the house? To take this idea one step further, why not set up a booby trap?
About the nail on the stairs - firstly, who hammered a nail onto the stair pointing up? Secondly, why didn't anybody remove it once it was discoverd?
I don't understand why the man needs to let himself be killed to distract the creature. He could throw a rock or something away from himself and the kids.
When the movie ended, it felt kind of short. What, that's it?? Oh, my bad. I forgot at some point I set the playback speed to 2x because the movie is so slow.
I don't understand how this movie gets such a high rating.